Department of Speech & Hearing Sciences, University of Washington, 1417 NE 42nd St., Seattle, WA 98105, USA.
Hear Res. 2012 Sep;291(1-2):52-6. doi: 10.1016/j.heares.2012.06.002. Epub 2012 Jun 23.
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.
人类听众对两耳时间差 (ITD) 的敏感程度进行了评估，使用的是 1000Hz 音调爆发（持续 500ms）作为先导，后面跟着 500ms 的“适配器”音调爆发（总适配器持续时间为 7s，频率为 200、665、1000 或 1400Hz），其中包含随机的 ITD，或持续相等的时间段的静音。适配器爆发序列的呈现以特定频率的方式降低了 ITD 敏感性。观察到的效果与以前描述的位置特异性心理物理适应形式不同，因为它是使用双耳扩散的音调爆发序列（即位置非特异性适配器刺激）产生的。结果在预双耳适应的背景下进行了讨论。
