The acoustical cues to sound location in the rat: Measurements of directional transfer functions
The acoustical cues to sound location in the rat: Measurements of directional transfer functions
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DOI：
10.1121/1.2916587
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发表时间：
2008-06-01
影响因子：
2.4
通讯作者：
Tollin, Daniel J.
中科院分区：
文献类型：
--
作者：
Koka, Kanthaiah;Read, Heather L.;Tollin, Daniel J.
声音定位的声学线索是由头部和外耳对传播声波进行空间和频率相关滤波而产生的。虽然大鼠一直是一个常见的模型系统的解剖学，生理学和心理物理学的定位，有一些研究的声音线索提供给大鼠。在这里，方向传递函数（DTFs），头部相关的传递函数的方向分量，在六个成年大鼠进行了测量。从DTF计算位置的线索。在前半球，频谱缺口存在的频率从类似的16至30 kHz，在一般情况下，相应的频率增加的缺口增加源仰角和朝向同侧耳的方位角。最大的高频声测耳间时间差（ITD）为130 μ s，而低频（20 kHz）。去除耳廓消除了频谱陷波，降低了声学增益和ILD，改变了声轴，并减少了ITD。(C)2008年，美国声学学会。
The acoustical cues for sound location are generated by spatial- and frequency-dependent filtering of propagating sound waves by the head and external ears. Although rats have been a common model system for anatomy, physiology, and psychophysics of localization, there have been few studies of the acoustical cues available to rats. Here, directional transfer functions (DTFs), the directional components of the head-related transfer functions, were measured in six adult rats. The cues to location were computed from the DTFs. In the frontal hemisphere, spectral notches were present for frequencies from similar to 16 to 30 kHz; in general, the frequency corresponding to the notch increased with increases in source elevation and in azimuth toward the ipsilateral ear. The maximum high-frequency envelope-based interaural time differences (ITDs) were 130 mu s, whereas low-frequency (20 kHz. Removal of the pinna eliminated the spectral notches, reduced the acoustic gain and ILDs, altered the acoustical axis, and reduced the ITDs. (C) 2008 Acoustical Society of America.