Frequency-specific, location-nonspecific adaptation of interaural time difference sensitivity

被引:4
|
作者
Brown, Andrew D. [1 ]
Kuznetsova, Marina S. [2 ]
Spain, William J. [3 ]
Stecker, G. Christopher [1 ]
机构
[1] Univ Washington, Dept Speech & Hearing Sci, Seattle, WA 98105 USA
[2] Univ Washington, Interdisciplinary Grad Program Neurobiol & Behav, Seattle, WA 98105 USA
[3] Vet Affairs Puget Sound Hlth Care Syst, Seattle, WA 98108 USA
关键词
SOUND LOCALIZATION; POTASSIUM CURRENTS; COCHLEAR NUCLEUS; LEVEL; LATERALIZATION; INHIBITION; CUES;
D O I
10.1016/j.heares.2012.06.002
中图分类号
R36 [病理学]; R76 [耳鼻咽喉科学];
学科分类号
100104 ; 100213 ;
摘要
Human listeners' sensitivity to interaural time differences (ITD) was assessed for 1000 Hz tone bursts (500 ms duration) preceded by trains of 500-ms "adapter" tone bursts (7 s total adapter duration, frequencies of 200, 665, 1000, or 1400 Hz) carrying random ITD, or by an equal-duration period of silence. Presentation of the adapter burst train reduced ITD sensitivity in a frequency-specific manner. The observed effect differs from previously described forms of location-specific psychophysical adaptation, as it was produced using a binaurally diffuse sequence of tone bursts (i.e., a location-nonspecific adapter stimulus). Results are discussed in the context of pre-binaural adaptation. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:52 / 56
页数:5
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