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Evidence for a sound movement area in the human cerebral cortex.

机译：人类大脑皮层中声音运动区域的证据。

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摘要

Human listeners can localize sounds by the difference in both arrival time (phase) and loudness between the two ears. Movement of the sound source modulates these cues, and responses to moving sounds have been detected in animals in primary auditory cortex and in humans in other cortical areas. Here we show that detection of changes in the interaural phase or amplitude difference occurs through a mechanism distinct from that used to detect changes in one ear alone. Moreover, a patient with a right hemisphere stroke is unable to detect sound movement, regardless of whether it is defined by phase or by loudness cues. We propose that this deficit reflects damage to a distinct cortical area, outside the classical auditory areas, that is specialized for the detection of sound motion. The deficit is analagous to cerebral akinotopsia (motion blindness) in the visual system, and so the auditory system may, like the visual system, show localization of specialized functions to different cortical regions.
机译：听众可以通过两只耳朵的到达时间（相位）和响度的差异来定位声音。声源的移动调节了这些提示，并且在初级听觉皮层的动物和其他皮质区域的人类中检测到了对移动声的响应。在这里，我们表明，耳间相位或幅度差异的变化是通过一种不同于单独检测一只耳朵变化的机制进行检测的。而且，无论是由相位还是由响度提示来定义，患有右半球卒中的患者都无法检测到声音运动。我们建议这种缺陷反映了对经典听觉区域以外的特定皮质区域的损害，该皮质区域专门用于检测声音运动。该缺陷类似于视觉系统中的大脑运动异常（运动失明），因此听觉系统可能像视觉系统一样，将特定功能定位于不同的皮质区域。

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