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1.
Med Sci Monit ; 29: e940387, 2023 May 16.
Artigo em Inglês | MEDLINE | ID: mdl-37190676

RESUMO

BACKGROUND Learning to read and write depends on the effective functioning of various sensory systems, including the auditory system. Auditory information processing involves behavioral and electrophysiological processes. Electrophysiological procedures are used to investigate activity in the auditory pathway in response to sound stimuli, and the associated cortical activity in discrimination, integration, and attention. The study evaluated electrophysiological testing for an auditory processing disorder and reading performance in 54 school students aged between 8 and 12 years. MATERIAL AND METHODS The study involved 54 public school students aged between 8 and 12 years, who were divided into a study group and control group. All children underwent basic audiological assessment, rating of reading and writing ability, non-verbal intelligence, auditory brainstem response, long-latency auditory-evoked potentials (LLAEP), frequency following responses (FFR), and auditory training (AT). RESULTS The basic audiological evaluation showed a statistically significant difference between groups only for the frequency of 6 kHz. The LLAEP response had a statistically significant difference between groups for N1 latency, P300 latency, and amplitude. Finally, there was a statistically significant difference between pre-AT and post-AT to LLAEP for latencies of P2, N2, and P300 and amplitudes of N2 and P300, and to FFR for latency of wave C. CONCLUSIONS This study showed that electrophysiological tests are sensitive tools for identifying deficits in the auditory pathway. Moreover, latency measures can detect improvements from an auditory training program. In this way, an auditory intervention program might help children with reading and writing difficulties.


Assuntos
Transtornos da Percepção Auditiva , Criança , Humanos , Leitura , Potenciais Evocados Auditivos/fisiologia , Potenciais Evocados Auditivos do Tronco Encefálico/fisiologia , Estimulação Acústica/métodos , Estudantes
2.
Braz. j. otorhinolaryngol. (Impr.) ; 85(3): 319-328, May-June 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1011623

RESUMO

Abstract Introduction: Central auditory processing screening in schoolchildren has led to debates in literature, both regarding the protocol to be used and the importance of actions aimed at prevention and promotion of auditory health. Defining effective screening procedures for central auditory processing is a challenge in Audiology. Objective: This study aimed to analyze the scientific research on central auditory processing screening and discuss the effectiveness of the procedures utilized. Methods: A search was performed in the SciELO and PUBMed databases by two researchers. The descriptors used in Portuguese and English were: auditory processing, screening, hearing, auditory perception, children, auditory tests and their respective terms in Portuguese. Inclusion criteria: original articles involving schoolchildren, auditory screening of central auditory skills and articles in Portuguese or English. Exclusion criteria: studies with adult and/or neonatal populations, peripheral auditory screening only, and duplicate articles. After applying the described criteria, 11 articles were included. Results: At the international level, central auditory processing screening methods used were: screening test for auditory processing disorder and its revised version, screening test for auditory processing, scale of auditory behaviors, children's auditory performance scale and Feather Squadron. In the Brazilian scenario, the procedures used were the simplified auditory processing assessment and Zaidan's battery of tests. Conclusion: At the international level, the screening test for auditory processing and Feather Squadron batteries stand out as the most comprehensive evaluation of hearing skills. At the national level, there is a paucity of studies that use methods evaluating more than four skills, and are normalized by age group. The use of simplified auditory processing assessment and questionnaires can be complementary in the search for an easy access and low-cost alternative in the auditory screening of Brazilian schoolchildren. Interactive tools should be proposed, that allow the selection of as many hearing skills as possible, validated by comparison with the battery of tests used in the diagnosis.


Resumo Introdução: A triagem do processamento auditivo central em escolares tem suscitado discussões na literatura, tanto em relação ao protocolo a ser usado quanto à importância de ações voltadas para a prevenção e promoção da saúde auditiva. Um desafio na audiologia é definir procedimentos eficazes na triagem do processamento auditivo central. Objetivo: Analisar as pesquisas científicas que aplicaram triagem do processamento auditivo central e discutir a eficácia dos procedimentos usados. Método: Foi feita busca nas bases de dados SciELO e PUBMed por duas pesquisadoras. Os descritores usados em português e inglês foram: processamento auditivo, triagem, audição, percepção auditiva, crianças, testes auditivos. Critérios de inclusão: artigos originais que envolveram escolares, triagem auditiva das habilidades auditivas centrais e artigos em português ou inglês. Critérios de exclusão: pesquisas com a população adulta e/ou neonatal, apenas triagem auditiva periférica e artigos duplicados. Após aplicação dos critérios descritos foram incluídos 11 artigos. Resultados: No âmbito internacional, os métodos de triagem do processamento auditivo central foram o uso do Screening Test for Auditory Processing Disorder e sua versão revisada, Screening Test for Auditory Processing, os checklists Scale of Auditory Behaviors e Children's Auditory Performance Scale e o Feather Squadron. No cenário brasileiro, os procedimentos foram a avaliação simplificada do processamento auditivo e a bateria de Zaidan. Conclusão: No âmbito internacional, as baterias Screening Test for Auditory Processing e Feather Squadron se destacam pela avaliação mais completa das habilidades auditivas. Em âmbito nacional, há escassez de estudos que usem métodos que avaliem mais de quatro habilidades, com normatização para a faixa etária. A aplicação da avaliação simplificada do processamento auditivo e questionários pode se complementar na busca de uma opção de fácil acesso e baixo custo na triagem auditiva escolar brasileira. Devem ser propostas ferramentas interativas, que possibilite triar o maior número possível de habilidades auditivas, validada por meio da comparação com a bateria de testes usados no diagnóstico.


Assuntos
Humanos , Criança , Transtornos da Percepção Auditiva/diagnóstico , Serviços de Saúde Escolar , Programas de Rastreamento , Testes Auditivos
3.
Braz J Otorhinolaryngol ; 85(3): 319-328, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-29615299

RESUMO

INTRODUCTION: Central auditory processing screening in schoolchildren has led to debates in literature, both regarding the protocol to be used and the importance of actions aimed at prevention and promotion of auditory health. Defining effective screening procedures for central auditory processing is a challenge in Audiology. OBJECTIVE: This study aimed to analyze the scientific research on central auditory processing screening and discuss the effectiveness of the procedures utilized. METHODS: A search was performed in the SciELO and PUBMed databases by two researchers. The descriptors used in Portuguese and English were: auditory processing, screening, hearing, auditory perception, children, auditory tests and their respective terms in Portuguese. INCLUSION CRITERIA: original articles involving schoolchildren, auditory screening of central auditory skills and articles in Portuguese or English. EXCLUSION CRITERIA: studies with adult and/or neonatal populations, peripheral auditory screening only, and duplicate articles. After applying the described criteria, 11 articles were included. RESULTS: At the international level, central auditory processing screening methods used were: screening test for auditory processing disorder and its revised version, screening test for auditory processing, scale of auditory behaviors, children's auditory performance scale and Feather Squadron. In the Brazilian scenario, the procedures used were the simplified auditory processing assessment and Zaidan's battery of tests. CONCLUSION: At the international level, the screening test for auditory processing and Feather Squadron batteries stand out as the most comprehensive evaluation of hearing skills. At the national level, there is a paucity of studies that use methods evaluating more than four skills, and are normalized by age group. The use of simplified auditory processing assessment and questionnaires can be complementary in the search for an easy access and low-cost alternative in the auditory screening of Brazilian schoolchildren. Interactive tools should be proposed, that allow the selection of as many hearing skills as possible, validated by comparison with the battery of tests used in the diagnosis.


Assuntos
Transtornos da Percepção Auditiva/diagnóstico , Criança , Testes Auditivos , Humanos , Programas de Rastreamento , Serviços de Saúde Escolar
6.
Int J Pediatr Otorhinolaryngol ; 90: 12-19, 2016 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-27729117

RESUMO

This study aimed to analyze the coding responses of speech sounds (syllable/da/) in children and adolescent speakers of Brazilian Portuguese with typical development and normal hearing, aged between 8 and 16 years, in order to establish normative data of speech ABR response. This normative data can be used as a reference for speech ABR responses and also to enable the diagnosis in individuals with different pathologies. The analyze for absolute latency of speech sounds, more specifically the syllable/da/, for speech-ABR in children and adolescent speakers of Brazilian Portuguese with typical development were: right ear - wave V (6,43-6,57), wave A (7,35-7,57), wave C (18,19-18,46), wave D (21,99-22,42), wave E (30,73-31,05), wave F (39,19-39,55) and wave O (47,75-48,24) and left ear - wave V (6,44-6,57), wave A (7,36-7,59), wave C (18,26-18,55), wave D (22,22 -22,50), wave E (30,58-30,97), wave F (39,05-39,35) and wave O (47,78-48,13). For the amplitude values (µv), the responses were within the following ranges: right ear - wave V (0,10-0,14), wave A (0,19-0,25), wave C (0,08-0,13), wave D (0,11-0,17), wave E (0,17-0,42), wave F (0,14-0,33) and wave O (0,11-0,31) and left ear - wave V (0,09-0,13), wave A (0,08-0,23), wave C (0,08-0,14), wave D (0,10-0,15), wave E (0,20-0,26), wave F (0,16-0,22) and wave O (0,12-0,20). For the values of complex VA (slope: µv/ms and area µv x ms) the follow values obtained were: right ear - slope (0,32-0,42) and area (0,29-0,38) and left ear - slope (0,30-0,39) and area (0,27-0,35).


Assuntos
Potenciais Evocados Auditivos do Tronco Encefálico/fisiologia , Percepção da Fala/fisiologia , Estimulação Acústica , Adolescente , Tronco Encefálico , Brasil , Criança , Etnicidade , Feminino , Humanos , Masculino , Fonética , Valores de Referência , Fala
7.
PLoS One ; 11(2): e0148360, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26849224

RESUMO

BACKGROUND AND OBJECTIVE: The auditory cortex modulates auditory afferents through the olivocochlear system, which innervates the outer hair cells and the afferent neurons under the inner hair cells in the cochlea. Most of the studies that investigated the efferent activity in humans focused on evaluating the suppression of the otoacoustic emissions by stimulating the contralateral ear with noise, which assesses the activation of the medial olivocochlear bundle. The neurophysiology and the mechanisms involving efferent activity on higher regions of the auditory pathway, however, are still unknown. Also, the lack of studies investigating the effects of noise on human auditory cortex, especially in peadiatric population, points to the need for recording the late auditory potentials in noise conditions. Assessing the auditory efferents in schoolaged children is highly important due to some of its attributed functions such as selective attention and signal detection in noise, which are important abilities related to the development of language and academic skills. For this reason, the aim of the present study was to evaluate the effects of noise on P300 responses of children with normal hearing. METHODS: P300 was recorded in 27 children aged from 8 to 14 years with normal hearing in two conditions: with and whitout contralateral white noise stimulation. RESULTS: P300 latencies were significantly longer at the presence of contralateral noise. No significant changes were observed for the amplitude values. CONCLUSION: Contralateral white noise stimulation delayed P300 latency in a group of school-aged children with normal hearing. These results suggest a possible influence of the medial olivocochlear activation on P300 responses under noise condition.


Assuntos
Estimulação Acústica/métodos , Potenciais Evocados/fisiologia , Ruído , Adolescente , Percepção Auditiva/fisiologia , Criança , Eletromiografia/instrumentação , Eletromiografia/métodos , Potenciais Evocados Auditivos , Feminino , Humanos , Masculino , Experimentação Humana não Terapêutica
8.
Braz. j. otorhinolaryngol. (Impr.) ; 81(1): 63-70, Jan-Feb/2015. tab
Artigo em Inglês | LILACS | ID: lil-741318

RESUMO

Introduction: Musicians have more robust and efficient neural responses in the cortical and sub-cortical regions, demonstrating that musical experience benefits the processing of both non-linguistic and linguistic stimuli. Objective: This study aimed to verify P300's latency and amplitude behavioral using contralateral stimulation in musicians and non-musicians. Methods: This was a case-control study. Subjects were divided in two groups: musicians, comprising 30 professional musicians, and non-musicians, comprising 25 subjects without musical experience. Results: The present study showed that the musicians had lower latencies and higher amplitudes than the non-musicians in the P300 without contralateral noise. For the P300 amplitude values, the difference between groups persisted, and the musicians presented significantly higher amplitude values compared with the non-musicians; additionally, the analysis of the noise effect on the P300 response showed that the latency values were significantly increased in the musicians. Conclusion: The central auditory nervous system of musicians presents peculiar characteristics of electrophysiological responses probably due to the plasticity imposed by musical practice. .


Introdução: Os músicos possuem respostas neurais mais robustas e eficientes em regiões corticais, mostrando que a experiência musical beneficia o processamento de estímulos linguísticos e não linguísticos. Objetivo: Verificar como a latência e a amplitude do P300 se comporta usando estimulação contralateral, em músicos e não músicos. Método: Estudo de caso-controle. Os indivíduos foram divididos em dois grupos: GM (grupo de músicos) com 30 músicos profissionais e GNM (grupo de não músicos) com 25 indivíduos sem experiência musical. Resultados: Os resultados mostraram que: GM teve latências menores e amplitudes maiores do que a GNM no P300 sem ruído contralateral. Para os valores de amplitude do P300, a diferença entre os grupos se manteve, e o GM apresentou valores de amplitude significativamente maiores em comparação com o GNM; e a análise do efeito do ruído sobre a resposta P300 mostrou que os valores de latência foram significativamente maiores no GM. Conclusão: Concluímos que o sistema nervoso auditivo central de músicos apresenta características peculiares de respostas eletrofisiológicas provavelmente devido à plasticidade imposta pela prática musical. .


Assuntos
Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , /fisiologia , Música , Estimulação Acústica , Percepção Auditiva , Estudos de Casos e Controles , Tempo de Reação
9.
Braz J Otorhinolaryngol ; 81(1): 63-70, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25497849

RESUMO

INTRODUCTION: Musicians have more robust and efficient neural responses in the cortical and sub-cortical regions, demonstrating that musical experience benefits the processing of both non-linguistic and linguistic stimuli. OBJECTIVE: This study aimed to verify P300's latency and amplitude behavioral using contralateral stimulation in musicians and non-musicians. METHODS: This was a case-control study. Subjects were divided in two groups: musicians, comprising 30 professional musicians, and non-musicians, comprising 25 subjects without musical experience. RESULTS: The present study showed that the musicians had lower latencies and higher amplitudes than the non-musicians in the P300 without contralateral noise. For the P300 amplitude values, the difference between groups persisted, and the musicians presented significantly higher amplitude values compared with the non-musicians; additionally, the analysis of the noise effect on the P300 response showed that the latency values were significantly increased in the musicians. CONCLUSION: The central auditory nervous system of musicians presents peculiar characteristics of electrophysiological responses probably due to the plasticity imposed by musical practice.


Assuntos
Potenciais Evocados P300/fisiologia , Música , Estimulação Acústica , Adulto , Percepção Auditiva , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Tempo de Reação , Adulto Jovem
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