新生儿和成人对气导和骨导短声的听觉脑干反应阈值。

Auditory brainstem response thresholds to air and bone conducted clicks in neonates and adults.

作者信息

Stuart A, Yang E Y, Stenstrom R, Reindorp A G

机构信息

Department of Psychology, Dalhousie University, Halifax, Nova Scotia, Canada.

出版信息

Am J Otol. 1993 Mar;14(2):176-82.

PMID:8503493

Abstract

Auditory brainstem response (ABR) thresholds to air and bone conducted clicks were investigated in 20 full-term neonates and 20 normal-hearing young adults. Results showed mean ABR thresholds to air and bone conducted clicks for neonates to be 3.75 dB nHL (40.75 peak SPL) and 1.25 dB nHL (36.25 dB peak re: 1 microN), respectively, and for adults 3.75 dB nHL (40.75 peak SPL) and 18.75 dB nHL (53.75 peak re: 1 microN), respectively. A significant difference was observed in mean ABR thresholds to bone conducted stimuli between neonates and adults (p < 0.0001) and among mean adult ABR thresholds to air and bone conducted stimuli (p < 0.0001). Nonsignificant differences were observed in mean ABR thresholds to air and bone conducted stimuli among neonates (p > 0.05) and in mean ABR thresholds to air conducted stimuli between neonates and adults (p = 1.00). It is speculated that the dissimilarity in the relationship of thresholds to air and bone conducted stimuli between neonates and adults reflects, in part, a difference in efficiency of signal delivery to the cochlea.

摘要

对20名足月新生儿和20名听力正常的年轻人进行了气导和骨导短声的听性脑干反应（ABR）阈值研究。结果显示，新生儿气导和骨导短声的平均ABR阈值分别为3.75 dB nHL（40.75峰值声压级）和1.25 dB nHL（相对于1微牛顿为36.25 dB峰值），而成人气导和骨导短声的平均ABR阈值分别为3.75 dB nHL（40.75峰值声压级）和18.75 dB nHL（相对于1微牛顿为53.75峰值）。在新生儿和成人之间，骨导刺激的平均ABR阈值存在显著差异（p < 0.0001），在成人气导和骨导刺激的平均ABR阈值之间也存在显著差异（p < 0.0001）。在新生儿之间，气导和骨导刺激的平均ABR阈值无显著差异（p > 0.05），在新生儿和成人之间，气导刺激的平均ABR阈值也无显著差异（p = 1.00）。据推测，新生儿和成人之间气导和骨导刺激阈值关系的差异部分反映了信号传递至耳蜗的效率差异。