SOME NEURAL MECHANISMS IN INFERIOR COLLICULUS OF CAT WHICH MAY BE RELEVANT TO LOCALIZATION OF A SOUND SOURCE
SOME NEURAL MECHANISMS IN INFERIOR COLLICULUS OF CAT WHICH MAY BE RELEVANT TO LOCALIZATION OF A SOUND SOURCE
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DOI：
10.1152/jn.1966.29.2.288
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发表时间：
1966-01-01
影响因子：
2.5
通讯作者：
HIND, JE
中科院分区：
文献类型：
--
作者：
ROSE, JE;GROSS, NB;HIND, JE
低最佳频率的神经元对双耳呈现的音调的反应是刺激的非自然时间关系的函数。对于任何有效频率，产生的尖峰计数是间隔时间差的周期函数；周期等于刺激音的周期。有证据表明，在特定于某一特定单元的刺激之间，可能只有一个耳间时间关系——称为其特征延迟——它对激活细胞的所有频率产生相似的反应。神经元对小的耳间强度差异敏感。这样的神经元可能有任何最佳频率。它们被单耳刺激激活，但双耳刺激大大减少或消除了这种反应。效果的大小可能是耳朵间强度差的敏感函数。神经元对双耳刺激的短暂抑制反应。提出了使这种反应成为可能的一些机制的证据。讨论了研究结果对声源定位的意义。
Neurons of low best frequency whose response to binaurally presented tones is a function of in -teraural time relationship of the stimuli. For any effective frequency spike-counts are produced which are a periodic function of interaural time differences; the period is equal to that of the stimulating tone. Evidence suggest that there may be only 1 interaural time relation between stimuli specific for a given unit - termed its characteristic delay - which causes similar responses to all frequencies which activate the cell. Neurons sensitive to small interaural intensity differences. Such neurons may have any best frequency. They are activated by stimuli to 1 ear but binaural stimulation greatly reduces or abolishes the response. The magnitude of the effect may be sensitive function of the intensity differential between the ears. Neurons responding to binaural stimuli with a transient inhibitory response. Evidence as to some mechanisms which make such responses possible is presented. Significance of the findings for sound source localization is discussed.