ABSTRACT
The anterior auditory field (AAF) is a core region of the auditory cortex and plays a vital role in discrimination tasks. However, the role of the AAF corticostriatal neurons in frequency discrimination remains unclear. Here, we used c-Fos staining, fiber photometry recording, and pharmacogenetic manipulation to investigate the function of the AAF corticostriatal neurons in a frequency discrimination task. c-Fos staining and fiber photometry recording revealed that the activity of AAF pyramidal neurons was significantly elevated during the frequency discrimination task. Pharmacogenetic inhibition of AAF pyramidal neurons significantly impaired frequency discrimination. In addition, histological results revealed that AAF pyramidal neurons send strong projections to the striatum. Moreover, pharmacogenetic suppression of the striatal projections from pyramidal neurons in the AAF significantly disrupted the frequency discrimination. Collectively, our findings show that AAF pyramidal neurons, particularly the AAF-striatum projections, play a crucial role in frequency discrimination behavior.
Subject(s)
Acoustic Stimulation/methods , Neurons/physiology , Auditory Cortex/physiology , Auditory Perception , Pyramidal CellsABSTRACT
ABSTRACT Objective: To map scientific knowledge about the use of percussion instruments in music therapy in individuals over 18 years of age in the health context. Method: Scope review with search strategy implemented in September 2021, in 13 databases, using indexed descriptors and keywords. Studies on the use of membranophones for care of people over 18 years of age were included. Studies with the participation of pregnant women, psychiatric patients (schizophrenia, psychosis, addiction), or people with hearing impairment, and journal editorials were excluded. The selection process was carried out by two independent researchers. Results: Thirteen studies were included and the results showed that the membranophones have a positive impact on the physical, psychological, and social health of people in different care environments, and allow them to repeat rhythmic patterns and play music. Active music therapy was the strategy predominantly used in interventions, and the most used membranophone was the djembe. Conclusion: The results suggest that music therapy with membranophones proved to be a viable intervention with beneficial results in improving physical, psychological, and social health of people over 18 years of age.
RESUMEN Objetivo: Mapear el conocimiento científico sobre el uso de instrumentos de percusión en musicoterapia en mayores de 18 años en el contexto de la salud. Método: Revisión de alcance con estrategia de búsqueda implementada en septiembre de 2021, en 13 bases de datos, utilizando descriptores indexados y palabras clave. Se incluyeron estudios sobre el uso de membranófonos en el cuidado de personas mayores de 18 años. Se excluyeron los estudios con la participación de mujeres embarazadas, pacientes psiquiátricos (esquizofrenia, psicosis, adicción) o personas con discapacidad auditiva; editoriales de revistas. El proceso de selección fue realizado por dos investigadores independientes. Resultados: Se incluyeron trece estudios y los resultados mostraron que los membranófonos tienen un impacto positivo en la salud física, psicológica y social de las personas en diferentes entornos de atención, además de permitirles repetir patrones rítmicos y reproducir música. La musicoterapia activa fue la estrategia predominantemente utilizada en las intervenciones, y el membranófono más utilizado fue el djembe. Conclusión: Los resultados sugieren que la musicoterapia con membranófonos demostró ser una intervención viable con resultados beneficiosos en la mejora de la salud física, psicológica y social de las personas mayores de 18 años.
RESUMO Objetivo: Mapear o conhecimento científico sobre o uso de instrumentos de percussão na musicoterapia, em indivíduos maiores de 18 anos, no contexto de saúde. Método: Revisão de escopo com estratégia de busca implementada em setembro de 2021, em 13 bases de dados, utilizando-se descritores indexados e palavras-chave. Foram incluídos estudos sobre o uso de membranofones no cuidado a pessoas maiores de 18 anos. Foram excluídos estudos com participação de gestantes, pacientes psiquiátricos (esquizofrenia, psicose, adição) ou pessoas com déficit auditivo; e editoriais de revistas. O processo de seleção foi realizado por dois pesquisadores independentes. Resultados: Treze estudos foram incluídos e os resultados mostraram que os membranofones impactam de forma positiva na saúde física, psicológica e social das pessoas, em diferentes ambientes de cuidado, além de habilitá-los a repetir padrões rítmicos e musicar. A musicoterapia ativa foi a estratégia predominantemente utilizada nas intervenções, e o membranofone mais utilizado foi o djembê. Conclusão: Os resultados sugerem que a musicoterapia com membranofones mostrou ser uma intervenção viável com resultados benéficos na melhora da saúde física, psicológica e social em pessoas maiores de 18 anos.
Subject(s)
Humans , Adult , Middle Aged , Aged , Aged, 80 and over , Complementary Therapies , Nursing , Music Therapy , Acoustic Stimulation , Review Literature as TopicABSTRACT
Introducción: La relación entre producción de leche materna y la música ha sido reportada en diversas publicaciones científicas. No hay publicaciones en Uruguay que analicen esta relación. Este estudio fue realizado por el Instituto Universitario CEDIIAP junto a la Universidad ORT, el Banco de Leche Humana del Hospital Pereira Rossell (CHPR), de la Administración de los Servicios de Salud del Estado. Fue aprobado por el Comité de Ética del CHPR. Objetivo: evidenciar la relación entre el estímulo musical y la producción de leche de madres de recién nacidos pretérmino internados en Cuidados Intensivos del CHPR. Material y métodos: estudio cuasiexperimental, de corte longitudinal, prospectivo, diseño doble: intervención antes después y en paralelo (un grupo contra el otro) utilizando audición de canciones elegidas por las madres con andamiento modificado. Criterios de inclusión: cohorte de madres de recién nacidos ≤ 34 semanas de gestación, sin alimentación a pecho directo, medicación psiquiátrica o que afectara la producción de leche. Se analizó cortisol en saliva y volumen de leche. Como análisis multivariado final, se aplicó el modelo lineal general de medidas repetitivas. Resultados: el estudio se realizó entre marzo de 2017 y agosto de 2018 con 31 madres (15 intervención, 16 control). El grupo intervención presentó mayor producción láctea en los 2 primeros días y disminución del 57 % en niveles de cortisol frente al grupo control. Conclusiones: más allá de las limitaciones del trabajo, los resultados apuntan a que la musicoterapia podría colaborar en la disminución del estrés, el disfrute de la lactancia materna y, consecuentemente, en una mayor producción de leche.
Introduction: the relationship between breast milk production and music has been previously reported in several peer reviewed journals. There are no studies in Uruguay analyzing this relationship. The present study was performed by the CEDIIAP University Institute jointly with the ORT University, at the Pereira Rossell Hospital Human Milk Bank (CHPR) of the Administration of State Health Services (ASSE) in Montevideo. It has been approved by the CHPR's Ethics Committee. Objective: demonstrate the influence of musical stimulation on milk production of mothers with preterm newborns admitted in the CHPR Neonatology Intensive Care Unit. Material and Methods: longitudinal, prospective experimental study with double design: intervention before, simultaneous (one group against the other) and after the study. We used the music therapy technique of listening to songs chosen by the mothers and modified gait. Milk volume was quan- tified, and cortisol presence was analyzed in saliva. The General Linear Model of repetitive measures was applied. Inclusion criteria: cohort of mothers of newborns ≤ 34 weeks of gestation, without direct breastfeeding, psychiatric medication or affecting milk production. Saliva cortisol levels and milk volume were analyzed. As a final multivariate analysis, the General Linear Model of repetitive measures was applied. Results: the study was carried out from March 2017 till August 2018 with a total of 31 mothers (15 intervention, 16 control). Higher milk production in the first two days and a decrease of 57% in cortisol levels were observed in the intervention group compared to the control group. Conclusions: in spite of the limitations of this paper, our results suggest that music therapy can help to reduce the stress and increase the enjoyment of breastfeeding and consequently generate a higher milk production.
Introducion: a relação entre produção do leite materno e a música foi apontada com evidências científicas em vários jornais. Não existem publicações no Uruguai que analisem esta relação. Este estudo foi realizado pelo Instituto universitário CEDIIAP junto com a Universidade ORT, o Banco de Leite Humano do Hospital Pereira Rossell (CHPR) da Administração dos Serviços de Saúde do Estado. Foi aprovado pelo Comité de Ética do CHPR. Objetivo: evidenciar a relação entre o estímulo musical e a produção do leite de mães com recém nascidos prematuros internados na unidade de cuidados intensivos do CHPR. Material e metodo: estudo quase experimental de corte longitudinal, prospectivo com desenho duplo: intervenção antes, depois e em paralelo (um grupo contra o outro) utilizando a audição de canções escolhidas pelas mães e andamento modificado. Critérios de inclusão: coorte de mães de recém nascidos ≤ 34 semanas de gestação sem alimentação a peito direto, nem medicação psiquiátrica ou que afetara a produção de leite. Foi analisado o cortisol em saliva e o volumem de leite. Aplicouse o Modelo Linear General de medidas repetitivas como análise multivariado final. Resultados: o estudo foi realizado entre março 2017 e agosto 2018 com 31 mães (15 do grupo intervenção, 16 do grupo controle). Foi observada maior produção láctea no grupo de intervenção nos dois primeiros dias e diminuição de 57% nos níveis de cortisol em relação ao grupo controle. Conclusões: além das limitações do paper, os resultados apontam para que a musicoterapia poderia colaborar na diminuição do estresse, o desfrute da lactância materna e consequentemente poderiam resultar em uma maior produção de leite.
Subject(s)
Humans , Female , Infant, Newborn , Adolescent , Adult , Young Adult , Acoustic Stimulation/psychology , Breast Feeding/psychology , Milk/statistics & numerical data , Mothers/psychology , Music Therapy , Infant, Premature , Hydrocortisone/analysis , Case-Control Studies , Prospective Studies , Longitudinal StudiesABSTRACT
Esta pesquisa qualitativa objetivou compreender, fenomenologicamente, a experiência vivida por psicoterapeutas e crianças no acontecer clínico da ludoterapia humanista. Foram realizados 26 encontros dialógicos individuais com nove psicoterapeutas e sete crianças, registrados pela pesquisadora na forma de Narrativas Compreensivas que incluíram suas impressões impactadas subjetivamente pelas falas e expressões corporais dos participantes. A análise fenomenológica culminou com a escrita de uma Narrativa Síntese. Os resultados indicam que a relação psicoterapêutica é percebida como: facilitadora do crescimento psicológico da criança; intensificadora do fluxo de mudanças ao dinamizar os processos pessoais infantis; geradora de motivação na criança para a relação interpessoal, a partir do envolvimento subjetivo do terapeuta; potencializadora da tomada de consciência com base na corporeidade; propiciadora da integração de experiências por meio do brincar; reveladora das singularidades individuais, catalisando o desenvolvimento; e, por fim, benéfica à atualização de significados e sentidos da experiência pessoal e relacional. Evidenciou-se, entre os psicoterapeutas, uma concepção da ludoterapia humanista que prioriza a compreensão dirigida ao estilo próprio de cada cliente em relação aos modos de sentir e expressar-se no mundo e à estruturação do processo psicoterapêutico a partir do relacionamento com a criança. Concluiu-se, assim, que a experiência desse tipo de relação interpessoal facilita a constituição na criança de singularidades que imprimem um sentido existencial próprio ao seu mundo de relações e historicidade. A relevância do processo psicoterapêutico para o crescimento psicológico da criança apresentou-se também pelo seu caráter psicoprofilático, reverberado no encadeamento de processos associados à experiência pessoal dela.(AU)
This qualitative research aimed to understand, phenomenologically, the lived experience of psychotherapists and children in the clinical event of humanistic play therapy. A total of 26 individual dialogical encounters were held with nine psychotherapists and seven children, registered in the form of Comprehensive Narratives by the researcher, which included her subjectively impacted impressions about the participants' speeches and body expressions. The phenomenological analysis culminated in a Synthesis Narrative. The results demonstrate that the psychotherapeutic relationship is perceived as: facilitating the child's psychological growth; intensifying the flow of change by streamlining children's personal processes; generating motivation for the child to get involved with interpersonal relationship, based on the subjective involvement of the therapist; potentiating awareness raising based on the corporeality; enabling the integration of experiences by playing; revealing the uniqueness, catalyzing development; and, finally, benefiting the updating of meanings and senses of personal and relational experience. A conception of humanistic play therapy became evident among the psychotherapists, which prioritizes the understanding directed to the own way of each client regarding how to feel and express themselves in the world and the structuring of the psychotherapeutic process based on the relationship with the child. Thus, it was concluded that the experience of this interpersonal relationship facilitates the constitution in the child of singularities that bring their own existential meaning to their world of relationships and historicity. The relevance of the psychotherapeutic process for the child's psychological growth was also shown by the psycho-prophylactic character reverberated in the processes associated with the child's personal experience.(AU)
Esta investigación cualitativa tuvo por objetivo comprender, fenomenológicamente, la experiencia vivida por psicoterapeutas y niños en ludoterapia de orientación humanista. La investigadora desarrolló 26 conversaciones dialógicas individuales con nueve psicoterapeutas y siete niños, registradas como narrativas comprensivas que incluyeron sus impresiones impactadas subjetivamente por los discursos y expresiones corporales de los participantes. El análisis fenomenológico culminó con una síntesis narrativa. Los resultados demuestran que la relación psicoterapéutica se percibe como facilitadora del crecimiento psicológico del niño; intensificadora del flujo de cambio, optimizando su procesos personales; generadora de motivación para que el niño se involucre en la relación interpersonal a partir del envolvimiento subjetivo del terapeuta; potenciadora de la toma de conciencia a partir de la corporeidad; propiciadora de la integración de las experiencias por medio del juego; reveladora de singularidades individuales al catalizar el desarrollo; y beneficiosa para actualizar los significados y sentidos de la experiencia personal e relacional. Entre los psicoterapeutas se hizo evidente una concepción de ludoterapia humanista que prima por comprender la forma propia del cliente de sentirse y expresarse y la estructuración del proceso psicoterapéutico a partir de la relación con el niño. Se concluyó que la vivencia de este tipo de relación facilita la constitución en el niño de singularidades que le aportan un sentido existencial a su mundo de relación e historicidad. La relevancia del proceso psicoterapéutico para el crecimiento psicológico también se mostró por su carácter psicoprofiláctico, que reverberó en la cadena de procesos asociados con la experiencia personal del niño.(AU)
Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , Aged , Play Therapy , Psychological Phenomena , Psychology, Clinical , Individuality , Learning , Anxiety , Pediatrics , Personality , Art Therapy , Psychology , Psychology, Social , Psychomotor Agitation , Psychotherapy , Recreation , Attention , Schools , Self Care , Self Concept , Social Behavior , Sports , Behavior Therapy , Acoustic Stimulation , Shyness , Bereavement , Divorce , Child , Child Behavior , Psychology, Child , Child Rearing , Child Health , Cognition , Domestic Violence , Communication Disorders , Life , Behavioral Disciplines and Activities , Drawing , Juvenile Literature , Creativity , Affect , Sensory Art Therapies , Trust , Qualitative Research , Aggression , Depression , Dyslexia , Education , Emotions , Empathy , Ethics , Family Relations , Adverse Childhood Experiences , Family Separation , Respect , Interpersonal Psychotherapy , Psychological Distress , Psychosocial Functioning , Gestalt Therapy , Diversity, Equity, Inclusion , Human Development , Humanism , Identification, Psychological , Acculturation , Interpersonal Relations , Language Disorders , Learning Disabilities , Music Therapy , Person-Centered PsychotherapyABSTRACT
Introdução: Os Aparelhos de Amplificação Sonora Individual (AASI) são considerados como uma ajuda externa e não solucionam todos os obstáculos de comunicação. Muitos idosos não apresentam bom aproveitamento da amplificação sonora, pois as próteses auditivas não fornecem as habilidades comunicativas ou equivalem à função natural do sistema auditivo. O Treinamento Auditivo tem como princípio desenvolver a neuroplasticidade, promovendo mudanças nas habilidades auditivas e desempenho auditivo mediante estimulação, permitindo que o idoso aprenda a vivenciar os sons de maneira significante. Objetivo: Verificar os benefícios do treinamento auditivo em idosos usuários de AASI. Metodologia: Trata-se de uma revisão integrativa. Foram pesquisados artigos nas bases de dados CAPES, SciELO e LILACS, e selecionados aqueles que atendiam aos critérios de inclusão. A questão norteadora que compôs o estudo foi a seguinte: "Quais os benefícios que o treinamento auditivo proporciona aos idosos usuários de próteses auditivas?" Resultados: A partir das combinações dos Descritores em Saúde (DeCS), obteve-se uma amostra de 318 artigos. Após o processo de análise, restaram 6 artigos para responder à questão proposta. Conclusão: O Treinamento Auditivo ocasionou melhora das habilidades de figura-fundo, integração binaural, ordenação e resolução temporal, em idosos usuários de AASI. A associação entre o uso das próteses auditivas e o treinamento auditivo, além de proporcionar audibilidade das informações acústicas, potencializa as habilidades envolvidas no processamento auditivo, independentemente da idade.
Introduction: Individual Sound Amplification Devices (ISAD) are considered an external help and do not solve all communication obstacles. Many elderly people do not present good use of the sound amplification, as hearing aids do not provide communication skills and are not equivalent to the natural function of the auditory system. The principle of Auditory Training is to develop neuroplasticity, promoting changes in auditory skills and auditory performance through stimulation, allowing the elderly to learn to experience sounds in a significant way. Objective: To verify the benefits of auditory training in elderly hearing aid users. Methodology: This is an integrative review. Articles were searched in the CAPES, SciELO and LILACS databases, and those that met the inclusion criteria were selected. The guiding question that composed the study was the following: "What are the benefits that auditory training provides to elderly users of hearing aids?" Results: From the combinations of Health Descriptors, a set of 318 articles was obtained. After the analysis process, 6 articles remained to answer the proposed question. Conclusion: Hearing Training improved figure-ground skills, binaural integration, ordering and temporal resolution in elderly hearing aid users. The association between the use of hearing aids and auditory training, in addition to providing audibility of acoustic information, enhances the skills involved in auditory processing, regardless of age.
Introducción: Los dispositivos de amplificación de sonido individuales se consideran una ayuda externa y no resuelven todos los obstáculos de comunicación. Muchas personas mayores no hacen un buen uso de la amplificación del sonido, ya que los audífonos no brindan habilidades de comunicación o son equivalentes a la función natural del sistema auditivo. El principio del Entrenamiento Auditivo es desarrollar la neuroplasticidad, promoviendo cambios en las habilidades auditivas y el desempeño auditivo a través de la estimulación, permitiendo que las personas mayores aprendan a experimentar los sonidos de manera significativa. Objetivo: Verificar los beneficios del entrenamiento auditivo en usuarios de audífonos de edad avanzada. Metodología: Esta es una revisión integradora. Se realizaron búsquedas de artículos en las bases de datos CAPES, SciELO y LILACS y se seleccionaron aquellos que cumplieron con los criterios de inclusión. La pregunta orientadora que compuso el estudio fue la siguiente: "¿Cuáles son los beneficios que brinda el entrenamiento auditivo a los usuarios mayores de audífonos?" Resultados: De las combinaciones de Descriptores de Salud (DeCS) se obtuvo una muestra de 318 artículos. Tras el proceso de análisis, quedaron 6 artículos para dar respuesta a la pregunta propuesta. Conclusión: El entrenamiento auditivo mejoró las habilidades de figura-fondo, integración binaural, ordenamiento y resolución temporal en usuarios de audífonos de edad avanzada. La asociación entre el uso de audífonos y el entrenamiento auditivo, además de proporcionar audibilidad de la información acústica, mejora las habilidades involucradas en el procesamiento auditivo, independientemente de la edad.
Subject(s)
Humans , Male , Female , Aged , Aged, 80 and over , Acoustic Stimulation , Hearing Aids , Correction of Hearing Impairment , Hearing Loss/rehabilitationABSTRACT
En el mundo se reportan más de 600 millones de personas que experimentan tinnitus. Aproximadamente 20% de las personas con tinnitus subjetivo permanente presentan incomodidad significativa, interviniendo negativamente en su calidad de vida, con inducción de estados depresivos. Existen diferentes estrategias de intervención para el manejo del tinnitus, entre ellas la estimulación acústica. El objetivo de este estudio fue evaluar el impacto de la estimulación acústica pasiva en la severidad del tinnitus y en la calidad de vida de los pacientes con tinnitus subjetivo crónico mediante la Escala Visual Análoga(VAS)y el Inventario de Discapacidad del Tinnitus(THI). Estudio descriptivo de cohorte histórico que incluyó a pacientes >18 años con tinnitus subjetivo crónico que recibieron manejo con estimulación acústica pasiva entre 2017-2018. A los pacientes se les aplicó la VAS y el THI antes, durante y después del tratamiento. Se evidenciaron cambios significativos (p<0,05) entre las medianas en dos de los tres dominios del VAS y en todos los dominios pre y post tratamiento del THI. En las pruebas post hoc se encontraron diferencias (p<0.05) entre las medianas de los puntajes al inicio y a los tres meses y entre los puntajes al inicio y a los seis meses en todos los dominios y en el puntaje total de la escala THI. La estimulación acústica pasiva generó cambios en la discapacidad generada por el tinnitus. Se sugiere complementar los abordajes de tratamiento con estrategias que favorezcan también los mecanismos de memoria, atención y conciencia para aumentar la efectividad de las intervenciones
More than 600 million people worldwide are reported to experience tinnitus. Approximately 20% of people with permanent subjective tinnitus present significant discomfort, interfering negatively in their quality of life, inducing depressive states. There are different intervention strategies for the management of tinnitus, including acoustic stimulation. The aim of this study was to evaluate the impact of passive acoustic stimulation on tinnitus severity and quality of life in patients with chronic subjective tinnitus using the Visual Analogue Scale (VAS) and the Tinnitus Disability Inventory (THI). Descriptive historical cohort study including patients >18 years with chronic subjective tinnitus who received management with passive acoustic stimulation between 2017-2018. Patients were administered VAS and THI before, during and after treatment. Significant changes (p<0.05) between medians were evident in two of the three VAS domains and in all pre and post-treatment domains of THI. In post hoc tests, differences (p<0.05) were found between the medians of scores at baseline and at three months and between scores at baseline and at six months in all of the domains and in the total THI scale score. Passive acoustic stimulation generated changes in tinnitus-generated disability. It is suggested to complement treatment approaches with strategies that also favor memory, attention and awareness mechanisms to increase the effectiveness of the inter ventions
Subject(s)
Humans , Quality of Life , Tinnitus , Acoustic Stimulation , Patients , Attention , Therapeutics , Aftercare , Equipment and Supplies , Gender IdentityABSTRACT
This research investigated the phenomenon of learners with cochlear implants and their challenges with cognitive effort in private mainstream schools in Gauteng. Many learners with cochlear implants encounter academic and social challenges at school, despite the advanced technology. Objectives: This study aimed to explore how learners with cochlear implants experience cognitive effort and whether it impacts their academic potential. Methods: Research was conducted using a phenomenological design. Phenomenography was used as theoretical framework to perceive, interpret and understand experiences of the cochlear implant recipients. The six former learners who were recipients of cochlear implants were selected using purposive sampling. Semi structured interviews were utilised to gather information, which was analysed using thematic content analysis. Results: Five themes emerged from the analysis, namely auditory challenges, cognitive functioning, peer interactions, emotional health and concealed disability. This article only presents the first theme of cognitive functioning and highlights three subthemes related to cognitive effort. Findings show that many learners struggled with their concentration span and fatigue, as a result of their cognitive effort difficulties. Conclusion: This study demonstrated how learners with cochlear implants face challenges with cognitive effort at their mainstream schools. It indicates the need for awareness of and training on educating learners with cochlear implants to help them reach their academic potential. Contribution: This study contributes a unique focus on learners with cochlear implants in mainstream schools in South Africa. The study highlights that cognitive effort of learners with cochlear implants influenced their capabilities to multitask and retain information, despite the effort they have to put into listening. Further research should be conducted to develop interventions that could lesson cognitive effort while increasing learner productivity. The article responds to disability studies and inclusive education
Subject(s)
Acoustic Stimulation , Cochlear Implants , Disabled Persons , Listening Effort , Auditory Fatigue , Bronchial Provocation Tests , CognitionABSTRACT
Stimulus-specific adaptation (SSA), defined as a decrease in responses to a common stimulus that only partially generalizes to other rare stimuli, is a widespread phenomenon in the brain that is believed to be related to novelty detection. Although cross-modal sensory processing is also a widespread phenomenon, the interaction between the two phenomena is not well understood. In this study, the thalamic reticular nucleus (TRN), which is regarded as a hub of the attentional system that contains multi-modal neurons, was investigated. The results showed that SSA existed in an interactive oddball stimulation, which mimics stimulation changes from one modality to another. In the bimodal integration, SSA to bimodal stimulation was stronger than to visual stimulation alone but similar to auditory stimulation alone, which indicated a limited integrative effect. Collectively, the present results provide evidence for independent cross-modal processing in bimodal TRN neurons.
Subject(s)
Animals , Rats , Acoustic Stimulation , Auditory Perception/physiology , Geniculate Bodies , Rats, Wistar , Thalamic Nuclei/physiologyABSTRACT
OBJECTIVE@#To explore whether the characteristic responses to sound stimulations of the auditory neurons in the striatum is regulated in different behavioral states.@*METHODS@#The auditory neurons in the striatum of awake C57BL/6J mice were selected for this study. We recorded the auditory response of the striatum to noises over a long period of time by building a synchronous in vivo electrophysiological and locomotion recording system and using glass microelectrode attachment recording. By analyzing the running speed of the mice, the behavioral states of the mice were divided into the quiet state and the active state, and the spontaneous activity and evoked responses of the auditory neurons in the striatum were analyzed in these two states.@*RESULTS@#Compared with those recorded in the quiet state, the spontaneous activity of the auditory neurons in the striatum of the mice increased significantly (37.06±12.02 vs 18.51±10.91, P < 0.001) while the auditory response of the neurons decreased significantly (noise intensity=60 dB, 3.45±2.99 vs 3.04±2.76, P < 0.001) in the active state.@*CONCLUSION@#Locomotion has a significant inhibitory effect on the auditory response of the striatum, which may importantly contribute to the decline of sound information recognition ability in the active state.
Subject(s)
Animals , Mice , Acoustic Stimulation , Auditory Cortex/physiology , Evoked Potentials, Auditory , Locomotion/physiology , Mice, Inbred C57BL , NeuronsABSTRACT
Objective: Functional near-infrared spectroscopy (fNIRS) was used to study the effect of aging on the neuroimaging characteristics of cerebral cortex in the process of speech perception. Method: Thirty-four adults with normal hearing were recruited from March 2021 to June 2021, including 17 in the young group, with 6 males, 11 females, age (32.1±5.0) years, age range 20-39 years. and 17 in the elderly group, with 6 males, 11 females, age (63.2±2.8) years, age range 60-70 years. The test material was the sentence table of the Mandarin Hearing Test in Noise (MHINT). The task state block experiment design was adopted, and the temporal lobe, Broca's area, Wernicke's area, motor cortex were used as regions of interest. Objective brain imaging technology (fNIRS) combined with subjective psychophysical testing method was used to analyze the activation area and degree of cerebral cortex related to auditory speech perception in the elderly and young people under different listening conditions (quiet, signal-to-noise ratio of 10 dB, 5 dB, 0 dB, -5 dB). SPSS 23 software was used for statistical analysis. Result: The activation area and degree of activation in the elderly group were lower than those in the young group under each task condition; The number of activation channels in the young group were significantly more than those in the old group, and the number of activation channels in the left hemisphere were more than those in the right hemisphere, but there was no difference in the number of activation channels. There were more channels affected by age in the left hemisphere than in the right hemisphere. The activation degree of the young group when the signal-to-noise ratio was 0 dB was significantly higher than that of other signal-to-noise ratio conditions (P<0.05), but there was no significant difference in the old group under the five conditions (P>0.05). The speech recognition score of the young group was higher than that of the old group under all conditions. When the quiet and signal-to-noise ratio was 10 dB, the correct score of the two groups was equal or close to 100%. With the gradual decrease of signal-to-noise ratio, there was a significant difference between the two groups when the signal-to-noise ratio was 5 dB. The speech recognition accuracy of the young group decreased significantly when the signal-to-noise ratio was 0 dB, while that of the old group decreased significantly when the signal-to-noise ratio was 5 dB. Conclusions: With the increase of age, the speech perception in noisy environment and the activity of cerebral cortex gradually deteriorate, and the speech dominance hemisphere (left hemisphere) will be significantly affected by aging. The overall activation area and activation degree of the elderly under different speech tasks are lower than those of the young.
Subject(s)
Adolescent , Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Acoustic Stimulation/methods , Auditory Cortex/physiology , Spectroscopy, Near-Infrared , Speech Perception/physiology , TechnologyABSTRACT
Abstract Introduction The cortical auditory evoked potential allows the possibility of objectively evaluating the entire auditory system, which is desirable in the pediatric population. Bone conduction auditory stimulation is recommended in the differential diagnosis of conductive hearing loss. However, there are not many studies of cortical auditory evoked potential using bone conduction. Objective The aim of this study was to characterize the response of cortical auditory evoked potential through bone conduction in normal-hearing neonates using an automated response analysis equipment. Methods This study included 30 normal-hearing neonates, without risk factors for hearing loss. The equipment used was the HEARlab automated response analysis and the cortical responses were evaluated at the frequencies of 500-4000 Hz through bone conduction, at intensity ranging from 0 to 60 dBnHL. The latencies and amplitudes were manually marked by experienced judges. Results Cortical auditory evoked potential responses were detected in 100% of the evaluated subjects and there was no difference regarding the cortical response of the neonates in relation to the variables of gender, ear and masking use. At an intensity of 60 dBnHL for the frequencies of 500, 1000, 2000 and 4000 Hz the latencies were 234; 241; 239 and 253 ms and the amplitudes were 15.6; 8.4; 6.2; 6.3 µV. The mean thresholds were 23.6; 28; 31 and 33.1 dBnHL, respectively. Conclusion It was possible to measure the cortical auditory evoked potential response in the neonatal population using bone vibrator as sound transducer and to draw the profile of the cortical auditory evoked potential latencies and amplitudes by frequencies at the intensity of 60 dBnHL and at the threshold.
Resumo Introdução O potencial evocado auditivo cortical traz a possibilidade de avaliar de forma objetiva todo o sistema auditivo, o que é desejável na população infantil. A estimulação auditiva por condução óssea é recomendada no diagnóstico diferencial da perda auditiva condutiva. Entretanto, não há muitos estudos de potencial evocado auditivo cortical com o uso do vibrador ósseo. Objetivo Caracterizar a resposta do potencial evocado auditivo cortical por vibrador ósseo em neonatos normo-ouvintes com equipamento de análise automática de resposta. Metodologia A pesquisa incluiu 30 neonatos normo-ouvintes e sem fator de risco para deficiência auditiva. Foi usado o equipamento de análise automática de resposta HEARlab e foram avaliadas as repostas corticais na frequências de 500 a 4000 Hz por vibrador ósseo, na intensidade de 0 a 60 dBnNA. As latências e amplitudes foram marcadas manualmente por juízes experientes. Resultados Foram detectadas respostas de potencial evocado auditivo cortical em 100% dos sujeitos avaliados. Não houve diferença na resposta cortical dos neonatos para as variáveis: sexo, orelha e uso do mascaramento. Para as frequências de 500, 1000, 2000 e 4000 Hz foram observadas as latências de 234; 241; 239 e 253 ms, as amplitudes de 15,6; 8,4; 6,2; 6,3 µV, na intensidade de 60 dBnNA, e os limiares médios de 23,6; 28; 31 e 33,1 dBnNA, respectivamente. Conclusão Foi possível obter a resposta do potencial evocado auditivo cortical na população neonatal com vibrador ósseo como transdutor de som e traçar o perfil das latências e amplitudes dos potencial evocado auditivo cortical por frequência nas intensidades de 60 dBnNA e no limiar.
Subject(s)
Humans , Infant, Newborn , Child , Bone Conduction , Evoked Potentials, Auditory , Auditory Threshold , Acoustic Stimulation , Evoked Potentials, Auditory, Brain Stem , HearingABSTRACT
Introdução: Associação entre adaptação de próteses auditivas e treinamento auditivo pode melhorar a comunicação do indivíduo e reduzir os déficits funcionais. Objetivo: verificar o benefício na qualidade de vida, sintomas depressivos, aspectos cognitivos, resolução temporal e limitação em atividades de vida em idosos com perda auditiva, após adaptação de próteses auditivas associadas ou não ao treinamento auditivo musical. Métodos: Grupo Experimental - GE: cinco idosos (64 a 79 anos) e Grupo Controle - GC: cinco idosos (62 a 77 anos), todos com perda auditiva neurossensorial simétrica de grau moderado. Foram submetidos à anamnese, miniteste de triagem cognitiva CASI-S, avaliação audiológica incluindo Índice Porcentual de Reconhecimento de Fala (IPRF), Client-Oriented Scale of Improvement (COSI), resolução temporal (teste GIN), triagem para sintomas depressivos (EDG-15), questionários de qualidade de vida (SF-36) e de autoavaliação para próteses auditivas (QI-AASI). Todos receberam próteses auditivas, e apenas o GE, o treinamento auditivo musical. Avaliação realizada em três momentos: antes da adaptação das próteses auditivas; 11 semanas após a adaptação das mesmas, sendo o GE submetido ao treinamento musical por sete semanas; e quatro meses depois. Resultados: Não houve diferença entre grupos segundo idade, escolaridade e triagem cognitiva. Todos apresentaram melhores limiares no teste de resolução temporal após a intervenção. Os escores dos testes de qualidade de vida e sintomas depressivos não foram significantemente diferentes entre grupos e avaliações. Conclusão: O uso efetivo de próteses auditivas, associado ou não ao treinamento musical, melhorou a resolução temporal. Não houve melhora significativa na qualidade de vida, sintomas depressivos, cognição e COSI.
Introduction: Association between hearing aid fitting and auditory training can improve an individual's communication and reduce functional deficits. Objective: to verify benefit in quality of life, depressive symptoms, cognitive aspects, temporal resolution, and limitation in daily activities for elderly people with hearing loss, after adaptation of hearing aids associated or not with musical auditory training. Methods: Experimental Group - EG: five elderly (64 to 79 years old) and Control Group - CG: five elderly (62 to 77 years old), all with moderate symmetric sensorineural hearing loss. They underwent anamnesis, cognitive screening CASI-S, audiological evaluation including Percentage Index of Speech Recognition (PISR), Client-Oriented Scale of Improvement (COSI), temporal resolution (GIN), screening for depressive symptoms (GDS-15), quality of life questionnaires (SF-36) and IOI-HA self-assessment. All received hearing aids but only the EG received the auditory musical training. Evaluation performed in three moments: before the fitting of the hearing aids; 11 weeks after their adaptation, with the EG undergoing musical training for seven weeks; and four months later. Results: There was no difference between groups according to age, education, and cognitive screening. All had better thresholds in the GIN after the intervention. The GDS-15 and SF-36 scores were not significantly different between groups and assessments. Conclusion: Using hearing aids associated or not with musical training improved temporal resolution. There was no improvement in the quality of life, depressive symptoms, cognition, and COSI scale.
Introducción: Asociación entre adaptación de prótesis auditivas y entrenamiento auditivo puede mejorar la comunicación del individuo y reducir los déficits funcionales. Objetivo: verificar el beneficio en la calidad de vida, síntomas depresivos, aspectos cognitivos, resolución temporal y limitación de la vida de las personas mayores con hipoacusia, tras adaptación de audífonos asociada o no al entrenamiento auditivo musical. Métodos: Grupo Experimental GE: cinco ancianos (64 a 79 años) y Grupo Control - GC: cinco ancianos (62 a 77 años) todos con hipoacusia neurosensorial simétrica moderada. Fueron sometidos a la anamnesis, miniprueba de triaje cognitiva CASI-S, evaluación audiológica incluyendo Índice Porcentual de Reconocimiento de Habla (IPRH), Client-Oriented Scale of Improvement (COSI), resolución temporal (prueba GIN), classificación para síntomas depresivos (EDG-15), cuestionarios de calidad de vida (SF-36) y autoevaluación de audífonos (QI-AASI). Todos recibieron los audífonos, sólo el GE, el entrenamiento auditivo musical. Evaluación realizada en tres momentos: antes de la adaptación de los audífonos; 11 semanas después de la adaptación de las mismas siendo el GE sometido al entrenamiento musical por siete semanas; y cuatro meses después. Resultados: No hubo diferencia entre grupos según edad, escolaridad y triaje cognitivo. Todos presentaron mejores umbrales en la prueba de resolución temporal después de la intervención. Los resultados de las pruebas de calidad de vida y los síntomas depresivos no fueron significativamente diferentes entre grupos y evaluaciones. Conclusión: Usar audífonos asociados o no con entrenamiento musical mejoró la resolución temporal. No hubo mejora significativa en la calidad de vida, síntomas depresivos, cognición y COSI.
Subject(s)
Humans , Male , Female , Middle Aged , Aged , Acoustic Stimulation , Simulation Training , Hearing Aids , Presbycusis/therapy , Correction of Hearing Impairment , Control Groups , Surveys and Questionnaires , Waiting Lists , Evaluation of the Efficacy-Effectiveness of InterventionsABSTRACT
The cerebral activity presents different behaviors in different situations and levels of consciousness, especially under musical stimulation. Signals of the central nervous system may disclose bioelectrical patterns, since listening to rhythmic sequences activates specific brain areas. In this paper, we analyze 42 neurologically normal Brazilian individuals, submitted to musical stimulation based on a procedure consisting of three different steps, during which the volunteer is kept with closed eyes. The first step is associated with the preliminary control silence period, without any stimulus, as the volunteer remains at rest. The second step consisted of unknown music stimulation. Finally, the third step involves post-music rest. Quantitative signal analysis computes the power spectrum time variations. Results point out stronger changes in gamma and high gamma waves (30 100 Hz). Even though the clinical rhythms (0 30 Hz) change throughout the whole period of the experiment, quantitative differences at gamma and high gamma bands are remarkably greater. Particularly, when comparing the initial silent period and the final post-stimulation silent one, bioelectrical differences are only highlighted by gamma and high gamma rhythms. In consequence, this paper points out that the EEG analysis of cognitive issues related to musical perception cannot disregard gamma and high gamma waves.
Subject(s)
Acoustic Stimulation , ElectroencephalographyABSTRACT
Objective: To investigate the variation regularity and influencing factors of cortical auditory evoked potential (CAEP) evoked by pure tone, syllable and tone stimuli in cochlear implant (CI) children. Methods: Cortical auditory evoked potential (CAEP) responses were collected from 46 CI children in the sound field. Pure tones with frequencies of 1 kHz and 2 kHz were used as the standard and the deviant respectively in the pure tone stimulation condition. The Chinese Mandarin tokens/ba/-/pa/and/ba1/-/ba4/pairs were used as the stimuli respectively in the syllable and tone stimulation condition. The latency, amplitude and presence rate of P1 and mismatch negative(MMN) were obtained and the correlation between the difficulty of auditory task, the age of hearing month, the duration of severe-profound hearing loss, the wearing history of hearing aid before CI, the hearing threshold of the better ear before CI and the latency and amplitude of P1 and MMN were analyzed. All statistical analyses and figures were conducted using SPSS 25.0. Results: The P1 presence rate of pure tone, syllable and tone group was 100% (17/17), 100% (13/13) and 75.0% (12/16), respectively, with significant difference (χ²=8.214, P=0.016). There was significant difference between pure tone group and tone group (χ²=4.836, P=0.028), but no significant difference between pure tone group and syllable group, syllable group and tone group. The MMN presence rate of pure tone, syllable and tone group was 94.1% (16/17), 84.6% (11/13) and 62.5% (10/16), respectively, but no significant difference among the three groups with different auditory tasks(χ²=0.066, P=0.066). No significant difference was observed among the three groups of different auditory tasks in the latency and amplitude of P1 and MMN. Multiple linear regression analysis showed that the latency of P1 was positively correlated with the difficulty of auditory task and the hearing threshold of the better ear before CI, and negatively correlated with hearing age and the history of hearing aid before CI. The latency of MMN was positively correlated with the difficulty of auditory task, and negatively correlated with hearing age. Conclusions: The P1 presence rate of pure tone auditory task is significantly higher than that of tone auditory task. The difficulty of auditory task, hearing age, the history of hearing aid before CI, and the hearing threshold of the better ear before CI has significant effects on the P1 latency. The difficulty of auditory task and hearing age has significant effects on the MMN latency.
Subject(s)
Child , Humans , Acoustic Stimulation , Cochlear Implantation , Cochlear Implants , Evoked Potentials, Auditory , Hearing , Hearing AidsABSTRACT
OBJECTIVES@#To explore the relationship between the frequency characteristics and response threshold of auditory steady-state response (ASSR), auditory brainstem response (ABR) and 40 Hz auditory event related potential (40 Hz AERP), and their application values in forensic medicine.@*METHODS@#Thirty volunteers with normal hearing (60 ears) were selected to perform pure tone audiometry (PTA) threshold and ASSR, ABR and 40 Hz AERP response threshold tests in the standard sound insulation shielding room, and the results were statistically analyzed by SPSS 22.0 software.@*RESULTS@#At 0.5 kHz and 1.0 kHz frequencies, the correlation between 40 Hz AERP response threshold and PTA threshold was good, which was better than that of ASSR and ABR response threshold. At 2.0 kHz and 4.0 kHz frequencies, the correlation between ASSR and ABR response thresholds and PTA threshold was good, which was better than that of 40 Hz AERP response threshold.@*CONCLUSIONS@#To evaluate the hearing at 0.5 kHz and 1.0 kHz frequencies, it is recommended to use 40 Hz AERP and ASSR to comprehensively assess the PTA threshold of the subjects. To evaluate the hearing at 2.0 kHz and 4.0 kHz frequencies, ABR and ASSR are recommended to assess the PTA threshold of subjects comprehensively. The combination of ASSR, ABR and 40 Hz AERP can improve the accuracy of hearing function evaluation.
Subject(s)
Humans , Acoustic Stimulation/methods , Audiometry, Evoked Response , Audiometry, Pure-Tone , Auditory Threshold/physiology , Evoked Potentials, Auditory, Brain Stem/physiology , Forensic Medicine , Hearing/physiologyABSTRACT
RESUMO Objetivo Avaliar como as vias auditivas codificam e diferenciam as sílabas plosivas [ga],[da] e [ba], por meio do potencial evocado auditivo Frequency Following Response (FFR), nas crianças em desenvolvimento típico. Método Vinte crianças (6-12 anos) foram avaliadas por meio do FFR para estímulos [ga],[da] e [ba]. Os estímulos foram compostos por seis formantes, sendo diferenciados na transição F2 e F3 (porção transiente). Os demais formantes foram idênticos nas três sílabas (porção sustentada). Foram analisadas latências de 16 ondas que compõe a porção transiente do estímulo (<70ms) e latências de 21 ondas da porção sustentada (90-160ms) nas respostas neurais obtidas para cada uma das sílabas. Resultados As respostas eletrofisiológicas registradas por meio do FFR demonstraram que as latências da porção transiente da resposta neural foram diferentes nas três silabas evocadas. Além disso, os valores de latência das ondas da porção transiente foram aumentando progressivamente, sendo [ga]<[da]<[ba]. Já na porção sustentada da resposta, não houve diferenças significantes nas latências das ondas que compõe essa porção. Conclusão O FFR mostrou-se uma ferramenta eficiente na investigação da discriminação subcortical de diferenças acústicas dos sons de fala, uma vez que demonstrou diferentes resposta eletrofisiológica para três silabas evocadas. Na porção transiente (consoantes) foram observadas mudanças de latência e na porção sustentada (vogal) não houve diferenças entre as latências para os três estímulos. Esses resultados demonstram a capacidade neural de distinção entre características acústicas dos estímulos [ga],[da],[ba].
ABSTRACT Purpose To evaluate how the auditory pathways encode and discriminate the plosive syllables [ga], [da] and [ba] using the auditory evoked Frequency-following Response (FFR) in children with typical development. Methods Twenty children aged 6-12 years were evaluated using the FFR for the [ga], [da] and [ba] stimuli. The stimuli were composed of six formants and were differentiated in the F2 to F3 transition (transient portion). The other formants were identical in the three syllables (sustained portion). The latencies of the 16 waves of the transient portion (<70ms) and of the 21 waves of the sustained portion (90-160ms) of the stimuli were analyzed in the neural responses obtained for each of the syllables. Results The transient portion latencies were different in the three syllables, indicating a distinction in the acoustic characteristics of these syllables through their neural representations. In addition, the transient portion latencies progressively increased in the following order: [ga] <[da] <[ba], whereas no significant differences were observed in the sustained portion. Conclusion The FFR proved to be an efficient tool to investigate the subcortical acoustic differences in speech sounds, since it demonstrated different electrophysiological responses for the three evoked syllables. Changes in latency were observed in the transient portion (consonants) but not in the sustained portion (vowels) for the three stimuli. These results indicate the neural ability to distinguish between acoustic characteristics of the [ga], [da] and [ba] stimuli.
Subject(s)
Humans , Child , Speech Perception , Phonetics , Acoustic Stimulation , Acoustics , Evoked Potentials, Auditory, Brain Stem , HearingABSTRACT
RESUMO Objetivo Identificar e analisar quais são os achados característicos dos Potenciais Evocados Auditivos Corticais (PEAC) em crianças e/ou adolescentes com Transtorno do Espectro do Autismo (TEA) em comparação do desenvolvimento típico, por meio de uma revisão sistemática da literatura. Estratégia de pesquisa Após formulação da pergunta de pesquisa, foi realizada uma revisão da literatura em sete bases de dados (Web of Science, Pubmed, Cochrane Library, Lilacs, Scielo, Science Direct, e Google acadêmico), com os seguintes descritores: transtorno do espectro autista (autism spectrum disorder), transtorno autístico (autistic disorder), potenciais evocados auditivos (evoked potentials, auditory), potencial evocado P300 (event related potentials, P300) e criança (child). A presente revisão foi cadastrada no Próspero, sob número 118751. Critérios de seleção Foram selecionados estudos publicados na integra, sem limitação de idioma, entre 2007 e 2019. Análise dos dados: Foram analisadas as características de latência e amplitude dos componentes P1, N1, P2, N2 e P3 presentes nos PEAC. Resultados Foram localizados 193 estudos; contudo 15 estudos contemplaram os critérios de inclusão. Embora não tenha sido possível identificar um padrão de resposta para os componentes P1, N1, P2, N2 e P3, os resultados da maioria dos estudos demonstraram que indivíduos com TEA podem apresentar diminuição de amplitude e aumento de latência do componente P3. Conclusão Indivíduos com TEA podem apresentar respostas diversas para os componentes dos PEAC, sendo que a diminuição de amplitude e aumento de latência do componente P3 foram as características mais comuns.
ABSTRACT Purpose To identify and analyze what are the characteristic findings of Cortical Auditory Evoked Potentials (CAEP) in children and / or adolescents with Autism Spectrum Disorder (ASD) compared to typical development, through a systematic literature review. Research strategies Based on the formulation of a research question, a bibliographic survey was carried out in seven databases (Web of Science, Pubmed, Cochrane Library, Lilacs, Scielo, Science Direct, and Google Sholar), with the following descriptors: autism spectrum disorder (transtorno do espectro autista), autistic disorder (transtorno autístico), evoked potentials, auditory (potenciais evocados auditivos), event related potentials, P300 (potencial evocado P300) e child (criança). This review was registered in Prospero, under number 118751. Selection criteria Were selected articles published, without language limitation, between 2007 and 2019. Data analysis The characteristics of the latency and amplitude aspects of the P1, N1, P2, N2 and P3 components present in the CAEP. Results 193 studies were located; however, 15 original articles were included the inclusion criteria for this study. Although it has not been possible to identify any pattern of response for the P1, N1, P2 and N2 components, the results of the selected studies have demonstrated that individuals with ASD may present a decrease in amplitude and increase in latency of the P3 component. Conclusion Individuals with ASD may present different responses to the components of the CAEP, and the decrease of the amplitude and increase of the latency of the P3 component were the most common characteristics.
Subject(s)
Humans , Child , Adolescent , Autistic Disorder , Autism Spectrum Disorder , Reaction Time , Acoustic Stimulation , Surveys and Questionnaires , Evoked Potentials, AuditoryABSTRACT
OBJECTIVES: We aimed to evaluate the effectiveness of a binaural auditory training program with vocal duets by comparing skills through outcomes from behavioral and electrophysiological assessment instruments at three moments: before the intervention, moment one (M1); immediately after training, moment two (M2); and 3 months after, moment three (M3). METHODS: This interventional, longitudinal, prospective, and uncontrolled study was approved by our Research Ethics Committee. Binaural auditory training with vocal duets (ATVD) was applied in 10 adults with normal audiometric thresholds and auditory processing disorders. ATVD used four different vocals of a public domain song sung in a cappella as stimuli. Participants were asked to register any perceived difference in frequency for each syllable of the song during 30-minute sessions twice a week. The number of sessions required ranged from 12 (6 hours) to 20 (10 hours). RESULTS: Regarding behavioral tests, the dichotic consonant-vowel test showed significant evidence of an improved advantage in the left ear (LE) in the non-forced condition and a significant reduction in the number of errors at M2 and M3 in the forced left condition. The speech-in-noise test and frequency pattern test showed a significant reduction in impaired results at M2 and M3. Electrophysiological results showed a significant increase in the LE amplitude in the P3 long-latency auditory evoked potentials test, as well as a decrease in the auditory brainstem response test (III-V and I-V inter-peak latencies in the right ear and wave I and I-III inter-peak latencies in LE). CONCLUSION: The effectiveness of ATVD was evidenced, and the results were maintained after 3 months.
Subject(s)
Humans , Adult , Auditory Perceptual Disorders , Evoked Potentials, Auditory , Speech , Acoustic Stimulation , Prospective Studies , Evoked Potentials, Auditory, Brain Stem , NoiseABSTRACT
OBJECTIVES: This study aimed to describe and compare the performance of older adults with normal hearing and hearing impairments in mismatch negativity (MMN), correlate MMN with cognitive tasks and central auditory processing (CAP), and identify normal values for MMN in older adults. METHODS: This study had 54 participants. The Montreal Cognitive Assessment (MoCA) was used to assess cognition and the random gap detection test (RGDT), dichotic digit test (DDT), and speech to noise (SN) test were used to evaluate CAP. MMN was elicited with the verbal stimulus /da/ (frequent) and /ta/ (rare), and the latency, amplitude, duration, and area were analyzed. RESULTS: When comparing the normal-hearing group to those with hearing loss, there was no significant difference in MMN. When correlating MMN with MoCA, RGDT, DDT, and the SN test, there was a weak correlation between the MMN amplitude and the RGDT and DDT. When comparing the MMN of participants with normal and altered cognitive aspects and those with normal and altered DDT, the MMN duration was found to be affected by the DDT. The mean latency value of the MMN in the normal-hearing group was 199.8 ms, the amplitude was -2.2 µV, area was 116.1 µV/ms, and duration was 81.2 ms. CONCLUSION: Mild hearing loss did not influence MMN. There was no correlation between MMN and cognitive aspects, and there were weak correlations with CAP. Alterations in CAP led to longer durations in MMN. Normal values for MMN in adults aged between 60 and 77 years were generated.
Subject(s)
Humans , Middle Aged , Aged , Auditory Perception , Speech , Acoustic Stimulation , Cognition , Evoked Potentials, Auditory , Hearing Tests , NoiseABSTRACT
OBJECTIVE: To evaluate the relationship between cognitive performance and long-latency auditory evoked potentials in an elderly population. METHODS: The sample consisted of adults between 20 and 58 years of age and elderly adults between 60 and 70 years of age. The screening procedures adopted were an inspection of the external auditory canal, tonal and vocal audiometry, tympanometry, brain stem auditory evoked potential, the Montreal Cognitive Assessment test, and long-latency auditory evoked potential. RESULTS: The latency and amplitude values of cortical components by age group showed significant differences under the following conditions: (i) signals evoked by the speech stimulus /da/ and by the pure-tone stimulus at 2,000 Hz for the N2 amplitude (p=0.008 and p=0.001, respectively) , which were both higher for adults, and (ii) signals evoked by the speech stimulus /da/ for N1 latency (p=0.018) and by the pure-tone stimulus at 2,000 Hz for P2 latency (p=0.017), which were both higher in the elderly population. The cognitive component (P300) showed a significant difference when evoked by speech stimuli, with higher latency in the elderly population (p=0.013). When correlated with cognitive processes, the latency and amplitude of cortical potentials showed direct and medium-strength correlations between abnormal scores obtained on the Montreal Cognitive Assessment test and P2 amplitude (p<0.001 and r=0.452). CONCLUSION: There is a relationship between long-latency potentials and cognitive performance in the elderly, which was observed by the increase in the P2 amplitude and the impairment of the process of sound decoding.