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1.
CoDAS ; 28(5): 497-506, Sept.-Oct. 2016. tab
Article in Portuguese | LILACS | ID: biblio-828562

ABSTRACT

RESUMO Objetivo coletar normas de associação semântica de 96 palavras do português brasileiro e aplicá-las, posteriormente, na elaboração de um teste de reconhecimento de fala com frases com controle da previsibilidade da palavra. Método participaram 67 voluntários com idades entre 18 e 27 anos. Foi aplicada uma tarefa de associação semântica com delimitação de classe de palavras. Resultados o tamanho médio do conjunto total e do significativo foi maior para a segunda evocação para as classes de verbos e substantivos. A força de associação semântica que prevaleceu na primeira recordação foi forte para a primeira e média para a segunda palavra. Na segunda recordação, a força de associação com maior prevalência foi média para a primeira e para a segunda palavra. Foi observada correlação negativa significativa entre a força de associação e os tamanhos total e significativo do conjunto. Conclusão Normas de associação semântica de 96 palavras do português brasileiro foram coletadas conforme proposto e resultaram em palavras associadas semanticamente para cada alvo nas categorias de verbo e substantivo, as quais foram utilizadas em um teste de reconhecimento de fala com frases considerando a previsibilidade da palavra.


ABSTRACT Purpose To collect the semantic association norms of 96 Brazilian Portuguese words for further application in the formulation of a speech recognition test using sentences with controlled word predictability. Methods Study participants were 67 volunteers aged 18 to 27 years. A semantic association task with word class delimitation was used. Results The mean sizes of the total and meaning sets were larger in the second recall to both verb and noun classes. The prevalent semantic association strength in the first recall was strong to the first word and moderate to the second word. In the second recall, the prevalent semantic association strength was moderate to both the first and second words. Significant negative correlation was observed between association strength and total and meaning set sizes. Conclusion The semantic association norms of 96 Brazilian Portuguese words were collected as proposed and resulted in semantic associates for each target word in the verb and noun classes that were used in a speech recognition assessment considering sentences with controlled word predictability.


Subject(s)
Humans , Male , Female , Adult , Young Adult , Semantics , Speech Discrimination Tests/instrumentation , Vocabulary , Brazil , Language
2.
CoDAS ; 27(2): 148-154, Mar-Apr/2015. tab, graf
Article in English | LILACS | ID: lil-748849

ABSTRACT

Purpose: To present and describe a new strategy and protocol for obtaining the Sentences Recognition Indexes (SRI), using the Lists of Phrases in Portuguese test (LPP), considering words in the analysis of responses; to analyze and compare the results using the previous and the new strategies by checking their applicability and suitability. Methods: To consider each word of the sentence, words were classified according to their importance: functional and content words, assigning them, respectively, two and one points. SRI were obtained in 33 normal hearing adults, and results were compared using the two strategies. Results: A new protocol was established. Each point corresponds to the following percentages in each list: 1B, 1.11%; 2B, 1.13%; 3B, 1.17%; 4B, 1.16%; 5B, 1.20%; and 6B, 1.11%. The median SRI obtained through usual and new strategies were, respectively, for the list 1B: 60 and 82.57%; 2B: 70 and 80.79%; 3B: 50 and 76.60%; 4B: 70 and 82.60%; 5B: 50 and 77.20%; and 6B: 60 and 82.14%. A significant difference was found when these strategies were compared. Conclusion: New strategy and protocol for evaluating the SRI were developed using the LPP test, considering each word of the sentence. When comparing the responses it was noticed that when considering each word in the sentence it is possible to scale, more detailed and less variability, the actual ability to recognize speech of each individual, the new strategy and protocol developed confirmed its applicability and suitability to assess Sentence Recognition Indexes in Quiet in individuals with hearing disorders in a specific listening condition. .


Objetivos: Apresentar e descrever uma nova estratégia e protocolo para obtenção do Índice Percentual de Reconhecimento de Sentenças (IPRS), utilizando o teste Listas de Sentenças em Português, considerando palavras na análise das respostas; analisar e comparar os resultados usando a estratégia anterior e a nova, verificando sua aplicabilidade e adequação. Métodos: Para considerar cada palavra da sentença, estas foram classificadas de acordo com sua importância: palavras de conteúdo e funcionais, atribuindo-as, respectivamente, dois e um pontos. IPRS foram obtidos em 33 adultos normo-ouvintes e os resultados foram comparados utilizando as duas estratégias. Resultados: Foi construído novo protocolo. Cada ponto correspondeu à seguinte porcentagem, em cada lista: 1B, 1,11%; 2B, 1,13%; 3B, 1,17%; 4B, 1,16%; 5B, 1,20% e 6B, 1,11%. As medianas dos IPRS obtidas através das estratégias usual e nova foram, respectivamente, para a lista 1B: 60 e 82,57%; 2B: 70 e 80,79%; 3B: 50 e 76,60%; 4B: 70 e 82,60%, 5B: 50 e 77,20%, 6B: 60 e 82,14%. Ao comparar as estratégias, foi encontrada diferença significante. Conclusão: Nova estratégia e protocolo de avaliação do IPRS foram desenvolvidos, utilizando o teste Listas de Sentenças em Português, considerando cada palavra da frase. Ao comparar as respostas, foi evidenciado que ao considerar cada palavra da frase é possível dimensionar, de forma mais detalhada e com menos variabilidade, a real capacidade de reconhecer a fala de cada indivíduo. A nova estratégia e o protocolo desenvolvidos confirmaram sua aplicabilidade e adequação para avaliar o IPRS dos indivíduos com distúrbios de audição, em uma condição de escuta específica. .


Subject(s)
Adult , Female , Humans , Male , Middle Aged , Young Adult , Auditory Perception , Hearing Disorders/diagnosis , Speech Perception , Speech Discrimination Tests/instrumentation , Hearing Loss, Sensorineural , Phonetics , Speech Discrimination Tests/methods
3.
Braz. j. otorhinolaryngol. (Impr.) ; 78(2): 11-15, mar.-abr. 2012. tab
Article in Portuguese | LILACS | ID: lil-622837

ABSTRACT

As novas tecnologias do processador Freedom® foram criadas para proporcionar melhorias no processamento do som acústico de entrada, não apenas para novos usuários, como para gerações anteriores de implante coclear. OBJETIVO: Identificar a contribuição da tecnologia do processador de fala Freedom® para implante coclear multicanal, Nucleus22®, no desempenho de percepção de fala no silêncio e no ruído, e nos limiares audiométricos. MATERIAL E MÉTODO: A forma de estudo foi de coorte histórico com corte transversal. Dezessete pacientes preencheram os critérios de inclusão. Antes de iniciar os testes, o último mapa em uso com o Spectra® foi revisto e otimizado e o funcionamento do processador foi verificado. Os testes de fala foram apresentados a 60dBNPS em material gravado: monossílabos; frases em apresentação aberta no silêncio; e no ruído (SNR = 0dB). Foram realizadas audiometrias em campo livre com ambos os processadores de fala. A análise estatística utilizou testes não-paramétricos. RESULTADOS: Quando analisada a contribuição do Freedom® para pacientes com Nucleus22®, observa-se diferença estatisticamente significativa em todos os testes de percepção de fala e em todos os limiares audiométricos. CONCLUSÃO: A tecnologia contribuiu no desempenho de percepção de fala e nos limiares audiométricos dos pacientes usuários de Nucleus22®.


New technology in the Freedom® speech processor for cochlear implants was developed to improve how incoming acoustic sound is processed; this applies not only for new users, but also for previous generations of cochlear implants. AIM: To identify the contribution of this technology - the Nucleus 22® - on speech perception tests in silence and in noise, and on audiometric thresholds. METHODS: A cross-sectional cohort study was undertaken. Seventeen patients were selected. The last map based on the Spectra® was revised and optimized before starting the tests. Troubleshooting was used to identify malfunction. To identify the contribution of the Freedom® technology for the Nucleus22®, auditory thresholds and speech perception tests were performed in free field in sound-proof booths. Recorded monosyllables and sentences in silence and in noise (SNR = 0dB) were presented at 60 dBSPL. The nonparametric Wilcoxon test for paired data was used to compare groups. RESULTS: Freedom® applied for the Nucleus22® showed a statistically significant difference in all speech perception tests and audiometric thresholds. CONCLUSION: The reedom® technology improved the performance of speech perception and audiometric thresholds of patients with Nucleus 22®.


Subject(s)
Adolescent , Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Cochlear Implants , Speech Discrimination Tests/instrumentation , Speech Perception/physiology , Acoustic Stimulation , Audiometry , Auditory Threshold , Cohort Studies , Cross-Sectional Studies , Deafness/rehabilitation , Speech Discrimination Tests/statistics & numerical data
4.
Braz. j. med. biol. res ; 38(2): 277-292, fev. 2005. tab
Article in English | LILACS | ID: lil-393646

ABSTRACT

We analyzed the performance of 162 normal subjects, subdivided into groups according to age and schooling, in the oral comprehension tasks of the Boston Diagnostic Aphasia Examination translated and adapted to Brazilian Portuguese to obtain a profile of performance for the Brazilian population, as well as cut-off scores for each task, and to determine the best combination of tasks that distinguish normal from aphasic subjects, as a guide for clinicians. The normal subjects were compared to 69 aphasics. Age alone influenced the performance in the designation of actions (subjects above 70 years showing the worst performance); schooling alone influenced the comprehension of forms, colors and numbers (subjects with less than four years of education showing a poorer performance). Both age and schooling influenced the performance in Body Part Identification (BPI) and Complex Ideational Material (CIM) with mean values of 70.5 ± 3.3 (Word Discrimination, WD), 18.9 ± 1.4 (BPI), 14.7 ± 0.9 (Commands), and 10.3 ± 1.7 (CIM) for the whole sample; the cut-off scores obtained were 65 (WD), 17.5 (BPI), 14 (Commands), and 9.5 (CIM) for the whole sample. Logistic regression showed that the combination of BPI + Commands + CIM was the most efficient in differentiating normal subjects from aphasics, with 72.5 percent sensitivity and 97.6 percent specificity. However, for low-education subjects, BPI and Commands were sufficient for this differentiation (75.7 percent sensitivity and 84.7 percent specificity). The main contribution of this study was to provide reference values that are far more representative of our population to be used by health professionals in Brazil, taking into account cultural differences.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Aphasia/diagnosis , Language Tests , Speech Perception , Speech Discrimination Tests/instrumentation , Aphasia/psychology , Brazil , Case-Control Studies , Cross-Cultural Comparison , Educational Status , Multivariate Analysis , Sensitivity and Specificity
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