A comparison between hearing and tone burst electrophysiological thresholds

Revista Brasileira de Otorrinolaringologia

Matas, Carla Gentile¹  Pinto, Fernanda Rodrigues¹  Universidade de São Paulo¹  Fundação de Amparo a Pesquisa do Estado de São Paulo¹ 

关键词: evoked potentials;    auditory;    evoked potentials;    auditory.;   

DOI  :  10.1590/S0034-72992007000400010

学科分类：医学（综合）

来源: Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial

【 摘 要 】

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.

【 授权许可】

Unknown