AZIMUTHAL PROCESSING IN THE POSTERIOR AUDITORY THALAMUS OF CATS
AZIMUTHAL PROCESSING IN THE POSTERIOR AUDITORY THALAMUS OF CATS
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DOI：
10.1016/0304-3940(92)90625-h
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发表时间：
1992-08-03
影响因子：
2.5
通讯作者：
JONES, R
中科院分区：
文献类型：
--
作者：
AITKIN, L;JONES, R
研究了麻醉猫听觉丘脑157个单元对自由场声刺激的响应与纯音刺激在方位面定位的关系。如果在超过阈值20 dB以上的声级下，发射速率随方位角的变化超过50%，则将单元归类为“定向”单元。下丘臂核和内侧膝状体腹侧区分别有65%和30%的单位具有方向性，提示下丘和皮层的声音定位加工通道不同。
The responses to free-field acoustic stimuli of 157 units ir the auditory thalamus of anesthetized cats were studied in relation to the localization of pure tone stimuli in the azimuthal plane. Units were classified as 'directional' if their firing rates at sound levels in excess of 20 dB above threshold varied by more than 50% as a function of azimuth. Sixty-five % of the units in the nucleus of the brachium of the inferior colliculus and 30% in the ventral division of the medial geniculate body were found to be directional, suggesting different processing channels for sound localization between colliculus and cortex.