年龄和听力损失对基于双耳时间差的声流分离的影响。

Effects of age and hearing loss on stream segregation based on interaural time differences.

作者信息

Füllgrabe Christian, Moore Brian C J

机构信息

MRC Institute of Hearing Research, Nottingham University Section, Science Road, Nottingham NG7 2RD, United Kingdom

Department of Experimental Psychology, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom

出版信息

J Acoust Soc Am. 2014 Aug;136(2):EL185-91. doi: 10.1121/1.4890201.

DOI:10.1121/1.4890201

PMID:25096145

Abstract

The effect of interaural time differences (ITDs) on obligatory stream segregation for successive tone bursts was investigated for older listeners with normal hearing (ONH) and hearing loss (OHL), by measuring the threshold for detecting a rhythmic irregularity in an otherwise isochronous sequence of interleaved "A" and "B" tones. The A and B tones had equal but opposite ITDs from 0 to 0.5 ms. For some of the ONH listeners, the threshold increased with increasing ITD, but no OHL listener showed an effect of ITD. It is concluded that hearing loss reduces the potency of ITDs in inducing obligatory stream segregation.

摘要

通过测量在交替出现的“A”音和“B”音的等时序列中检测节奏不规则性的阈值，研究了双耳时间差（ITD）对正常听力的老年听众（ONH）和听力损失听众（OHL）连续音爆的强制性流分离的影响。A音和B音的ITD从0到0.5毫秒，大小相等但方向相反。对于一些正常听力的听众，阈值随着ITD的增加而升高，但没有听力损失的听众表现出ITD的影响。研究得出结论，听力损失会降低ITD在诱导强制性流分离方面的作用。