A hypercolumn of monkey striate cortex was studied with an array of 30 closely spaced microelectrodes. Prominent broad peaks appearing in spike train correlograms are considered here. These were not due to shared stimulation, were mostly 30 to 100 ms wide, and were presumably the consequence of intraretinal lateral interactions. The correlogram peak areas were found to be predictable from the products of the spike rates, to which they were proportional. One can conclude that the correlation occurs before the overall reduction of spike rates from retina to cortex takes place. Furthermore, when a neurone dominated by one eye was stimulated via that eye, the correlogram formed with a neurone dominated by the other eye showed a displaced peak, indicating that excitation traveled from the well-responding to the unresponsive neurone in about 10 ms. When a left-eye stimulus was delivered, the same pair of neurones had a correlogram with a reversed peak displacement. This effect was only observed in layers IVb and c, indicating that in these layers the paths from the two eyes to a given cell are of unequal length, whereas in other layers, cells receive input from both eyes via similar connections differing only in strength.

译文

:研究了猴纹状皮质的一个超柱,该阵列由30个紧密排列的微电极组成。这里考虑了在尖峰列相关图中出现的突出的宽峰。这些不是由于共同的刺激,主要是30到100毫秒宽,大概是视网膜内侧向相互作用的结果。发现关联图的峰面积可以从峰值速率的乘积中预测出来,它们与峰值速率成正比。可以得出这样的结论:相关性发生在从视网膜到皮层的刺突率总体降低之前。此外,当通过一只眼睛支配一只眼睛的神经元受到刺激时,与另一只眼睛支配的神经元形成的相关图显示了一个位移峰,表明激发在大约10毫秒内从响应良好的神经元传播到了无反应的神经元。传递左眼刺激时,同一对神经元的相关图具有相反的峰值位移。仅在第IVb和c层中观察到了这种影响,表明在这些层中,从两只眼睛到给定单元格的路径长度不等,而在其他层中,单元格则通过强度仅不同的相似连接来接收来自两只眼睛的输入。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录