STIMULUS INDUCED AND SPONTANEOUS RHYTHMIC FIRING OF SINGLE UNITS IN CAT PRIMARY AUDITORY-CORTEX
STIMULUS INDUCED AND SPONTANEOUS RHYTHMIC FIRING OF SINGLE UNITS IN CAT PRIMARY AUDITORY-CORTEX
复制标题
DOI：
10.1016/0378-5955(92)90029-m
复制
发表时间：
1992-08-01
期刊：
影响因子：
2.8
通讯作者：
EGGERMONT, JJ
中科院分区：
文献类型：
--
作者：
EGGERMONT, JJ
在氯胺酮麻醉下，对成年猫初级听觉皮层的385个神经元和10-55日龄小猫的265个神经元进行了记录。对重复点击刺激反应的时间调制传递函数在8 Hz处达到峰值。在点击后，观察到一个持续时间为130-155 ms的抑制期，这取决于点击率。这个抑制期限制了对高点击率的反应，从而决定了点击反应中的“共鸣”。幼猫的抑制持续时间以指数方式向成虫值下降，时间常数约为1个月。在持续1秒的点击训练后，在成年猫中约60%的记录中观察到平均周期为113毫秒的振荡反弹。自发活动在约30%的神经元中显示振荡自相关图，成年猫的平均周期为126 ms，小猫的平均周期为170 ms。
Recordings were made under ketamine anesthesia from 385 neurons in primary auditory cortex in adult cat and from 265 neurons in 10-55 day old kittens. The temporal Modulation Transfer Function for the response to repetitive click stimuli peaked at 8 Hz. After a click a suppression period of 130-155 ms in duration, depending on click-rate, was observed. This suppression period limited the response to high click rates and thereby determined the `resonance' in the click response. The suppression duration in kittens decreased in exponential fashion toward the adult value with a time constant of about 1 month. After the one second duration click-trains an oscillatory rebound with a mean period of 113 ms was observed in about 60% of the recordings in the adult cat. Spontaneous activity showed in about 30% of the neurons an oscillatory auto-correlogram with an average period of 126 ms in the adult cats and 170 ms in kittens.