Forward masking with frequency-following response analyses
Rev. CEFAC
; 23(2): e1220, 2021. tab, graf
Article
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| LILACS
| ID: biblio-1155329
Biblioteca responsable:
BR1.1
ABSTRACT
ABSTRACT Purpose:
to analyze forward masking in normally hearing young people, by using frequency-following responses.Methods:
the synthetic syllable /da/ was used for the recordings of ten individuals, in the following conditions /da/ with no masking, and /da/ after 4, 16, 32, and 64 milliseconds of masking. F-test (ANOVA) was applied for repeated measures with the Greenhouse-Geisser correction to compare testing conditions. For significant differences, multiple comparisons (between pairs of conditions) and Bonferroni correction were used. Data normality was verified by applying the Shapiro-Wilk test, and statistical significance was used at 5%.Results:
wave latencies of all masking conditions were compared with those of no masking. A latency delay was observed in the transient region of the response (PV and A) in all masking conditions, except for 64 milliseconds. Latency delay also occurred for waves PW, PX, and PY, which corresponded to the sustained region of the response.Conclusion:
forward masking was observed, by using frequency-following responses with /da/ syllable in four intervals (4, 16, 32, and 64 ms) of preceding masking. Forward masking was more evident in the transient region of the response than in the sustained one. This study highlights the importance of electrophysiological testing in temporal processing assessment.Palabras clave
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LILACS
Asunto principal:
Percepción de la Altura Tonal
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Potenciales Evocados
Tipo de estudio:
Observational_studies
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Prevalence_studies
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Risk_factors_studies
Idioma:
En
Revista:
Rev. CEFAC
Asunto de la revista:
Terapia
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PATOLOGIA DA FALA E LINGUAGEM
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Terapia
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ReabilitaÆo
Año:
2021
Tipo del documento:
Article