ABSTRACT
Abstract Introduction One of the major cues that help in auditory stream segregation is spectral profiling. Musicians are trained to perceive a fine structural variation in the acoustic stimuli and have enhanced temporal perception and speech perception in noise. Objective To analyze the differences in spectral profile thresholds in musicians and nonmusicians. Methods The spectral profile analysis threshold was compared between 2 groups (musicians and nonmusicians) in the age range between 15 and 30 years old. The stimuli had 5 harmonics, all at the same amplitude (f0 = 330 Hz, mi4). The third (variable tone) has a similar harmonic structure; however, the amplitude of the third harmonic component was higher, producing a different timbre in comparison with the standards. The subject had to identify the odd timbre tone. The testing was performed at 60 dB HL in a sound-treated room. Results The results of the study showed that the profile analysis thresholds were significantly better in musicians compared with nonmusicians. The result of the study also showed that the profile analysis thresholds were better with an increase in the duration of music training. Thus, improved auditory processing in musicians could have resulted in a better profile analysis threshold. Conclusions Auditory stream segregation was found to be better in musicians compared with nonmusicians, and the performance improved with an increase in several years of training. However, further studies are essential on a larger group with more variables for validation of the results.
ABSTRACT
With a high sound quality stimulated by the electrical device and a large inclusion in medical insurance, the number of cochlear implant recipients has been rapidly increased in Korea. Today, it is not surprising that early implanted young children with congenital deafness show a similar performance to their normal hearing peers in speech perception. However, the cochlear implant users still have a trouble to enjoy music. This review study aims to introduce briefly about acoustic components that required to perceive the music and understand a relationship between cochlear implantation and temporal fine structure. For the pediatric implant users who have less experience on acoustical sound features but are much familiar with the electrically stimulated sound, perceiving the music seems to be challengeable due to the lack of temporal fine resolution related to pitch and timbre among various components of music. Four representative test batteries for evaluating the recipients' ability of the music perception were mentioned and effective auditory music trainings were discussed with analysis of related investigations. Unlike hearing aids users who usually depend on fitting algorism for better music quality, the cochlear implant users need systematic training to improve their music perception ability. In conclusion, advancement of speech processing technology which can provide accurate information about the temporal fine structure of incoming music to the recipients needs to be developed. Also, a practical application of music training should be recommended as a part of auditory training for the cochlear implant users.
Subject(s)
Child , Humans , Acoustics , Cochlear Implantation , Cochlear Implants , Deafness , Hearing , Hearing Aids , Insurance , Korea , Music , Perception , Pitch Perception , Speech PerceptionABSTRACT
A lo largo de este trabajo, se revisaron las principales investigaciones que dan cuenta del efecto del entrenamiento musical tanto del cerebro adulto como en desarrollo. La música realiza demandas únicas al sistema nervioso. Esto llamó la atención de muchos investigadores provocando, en los últimos años, un incremento en las investigaciones en relación a la temática. Este aumento se vio beneficiado por el surgimiento de nuevas técnicas de neuroimagen y que posiciona a la música como una herramienta de investigación de la cognición humana y los mecanismos cerebrales superiores. La percepción y la producción musical son funciones particulares del cerebro humano que dependen de una amplia red neural córtico-subcortical distribuida en ambos hemisferios cerebrales y cerebelo. Los hallazgos en relación al tema indicarían que se encuentran diferencias tanto en la estructura como en el funcionamiento de los cerebros de adultos y de niños debido al entrenamiento musical, y que esto tiene más relevancia que las propiedades innatas de los sujetos. Existe una plasticidad cerebral que se debe a procesos adaptativos fruto de la estimulación ambiental.
The main research about the effect of musical training in adult and childhood brain was revised in this work. The music realizes unique demands to our nervous system. This call the attention of several researchers causing, in the past years, an enhancement of the exploration about this topic; this increment was beneft for the emergence of new neuroimaging techniques, the music positioned as an investigation tool of human cognition and superior brain mechanisms. The musical perception and production are specific functions of the human brain that depend of a wide cortical-subcortical neural net distributed across both hemi-spheres and cerebellum. The main findings in this area indicated structural and functional differences in the adult and child brain due to musical training, and this is more relevant that innate properties of the subject. There is brain plasticity due to adaptive processes product of the environmental stimulation.
ABSTRACT
A memória operacional e a atividade musical ativam áreas encefálicas recíprocas e homólogas, contudo não há evidências se o treino musical pode ampliar a capacidade da memória operacional. Objetivo: Avaliar o desempenho do treino musical sob a memória operacional em crianças de 9 e 10 anos de idade, praticantes de treino musical e sem experiência musical. PARTICIPANTES: Crianças Iniciantes (n=20), Veteranas (n=20) e Grupo Controle (n=20). MATERIAIS: Instrumentos computadorizados para avaliação da memória operacional. RESULTADOS: Crianças veteranas apresentaram melhores pontuações no BCPR (Teste de Repetição de Pseudopalavras para crianças brasileiras) e em subtestes da AWMA (Avaliação Automatizada da Memória Operacional). CONCLUSÃO: O treino musical parece ter contribuído para o desenvolvimento da memória operacional em crianças veteranas no programa de treino musical.
Working memory and musical activity activate reciprocal and homologues brain areas. However, there is a lack of evidence if musical training can amplify the working memory span. Objective: To assess the performance of musical training on working memory in children aged 9 and 10 years old who regularly have musical training or with no musical training at all. PARTICIPANTS: Beginners (n=20), Veterans (n=20) and a Control Group (n=20). MATERIALS: Computerized instruments to assess working memory. RESULTS: Veteran children presented higher scores in BCPR (Brazilian Children's Test of Pseudoword Repetition) and in specific tasks of AWMA (Automated Working Memory Assessment). CONCLUSION: Musical training seems to have contributed for working memory development in veteran children under musical training programs.
Subject(s)
Humans , Male , Female , Child , Memory, Short-Term , Music/psychologyABSTRACT
The influence of music on the human brain has been recently investigated in numerous studies. Several investigations have shown that structural and functional cerebral neuroplastic processes emerge as a result of long-term musical training, which in turn may produce cognitive differences between musicians and non-musicians. Musicians can be considered ideal cases for studies on brain adaptation, due to their unique and intensive training experiences. This article presents a review of recent findings showing positive effects of musical training on non-musical cognitive abilities, which probably reflect plastic changes in brains of musicians.
A influência da música no cérebro humano tem sido alvo de vários estudos nos últimos anos. Muitos trabalhos têm demonstrado que processos neuroplásticos estruturais e funcionais surgem no cérebro como resultado de treinamento musical prolongado, os quais podem produzir diferenças cognitivas entre músicos e não-músicos. Os músicos podem ser considerados como casos ideais para investigações relacionadas à adaptação cerebral, devido às suas experiências únicas e intensivas de treinamento. Este artigo apresenta uma revisão das recentes descobertas que mostram efeitos positivos do treinamento musical em capacidades cognitivas não-musicais, o que poderia refletir a ocorrência de alterações plásticas nos cérebros de músicos.