The Chirp Evoked Auditory Brainstem Responses in Normal -hearing Subjects

VernacularTitle:听力正常青年人 chirp 声诱发听性脑干反应特点分析
Author: Lejuan SHI ; Jianhui YAO ; Weiyang LU ; Xiangping CHEN
Publication Type:Journal Article
Keywords: Chirp; Auditory brainstem responses (ABR)
From: Journal of Audiology and Speech Pathology 2014;(2):124-126
CountryChina
Language:Chinese
Abstract: Objective To analyze the characteristic of auditory brainstem responses (ABR) evoked by chirp in normal hearing subjects .Methods Fifteen cases (30 ears) with normal hearing young people were recorded ABR by stimulation with two kinds of sounds :chirp and click .The data were compared .Results The response threshold of chirp-ABR were lower than that of click -ABR .The average difference was 8 .59 dB .At 90 dB nHL ,the wave V amplitude yield no significant difference between chirp -ABR and click-ABR .The wave V amplitude had a signifi-cant difference between chirp -ABR and click-ABR at 60 dB nHL .At 90 and 60 dB nHL ,the wave V amplitude of chirp-ABR had not a significant difference .The occurence rate was 40% for the wave I of chirp -ABR ,obvi-ously less than that of click -ABR .At 90 dB nHL ,the wave V latency of chirp -ABR was shorter than that of click-ABR .Conclusion The wave V response threshold of chirp -ABR is less than that of the click -ABR .The chirp-ABR is more advantageous than the click -ABR for assessing hearing threshold .