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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A comparison between hearing and tone burst electrophysiological thresholds

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Author(s):
Fernanda Rodrigues Pinto [1] ; Carla Gentile Matas [2]
Total Authors: 2
Affiliation:
[1] Fundação de Amparo a Pesquisa do Estado de São Paulo - Brasil
[2] Universidade de São Paulo. Faculdade de Medicina. Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional
Total Affiliations: 2
Document type: Journal article
Source: Revista Brasileira de Otorrinolaringologia; v. 73, n. 4, p. 513-522, 2007-08-00.
Field of knowledge: Health Sciences - Speech Therapy
Abstract

Studies have reported compatibility between hearing and electrophysiological thresholds in the auditory brainstem response (ABR) with tone burst stimuli. AIMS: to verify waves I, III, V and their latency times for tone bursts at 500, 1000, 2000 and 4000 Hz and at 80 dB HL, and to compare tone burst electrophysiological thresholds with those obtained from audiological and psychoacoustic evaluations. METHODS: audiological, psychoacoustic and electrophysiological evaluations of 40 male and female normal hearing individuals aged between 18 and 40 years were undertaken. RESULTS: only wave V was visualized at 80 dB HL and its latency values decreased with increased frequencies in both genders. At 1000, 2000 and 4000 Hz male subjects presented higher electrophysiological thresholds values than females at all frequencies. At 500, 1000 and 2000 Hz, electrophysiological, hearing, and psychoacoustic thresholds were statistically different in both genders. CONCLUSION: although ABR with tone burst stimulus is clinically applicable, further research is needed to standardize test techniques and results. (AU)