STIMULUS-SPECIFIC NEURONAL OSCILLATIONS IN ORIENTATION COLUMNS OF CAT VISUAL-CORTEX
STIMULUS-SPECIFIC NEURONAL OSCILLATIONS IN ORIENTATION COLUMNS OF CAT VISUAL-CORTEX
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DOI：
10.1073/pnas.86.5.1698
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发表时间：
1989-03-01
影响因子：
11.1
通讯作者：
SINGER, W
中科院分区：
文献类型：
--
作者：
GRAY, CM;SINGER, W
在猫视觉皮层的区域17和18中，神经元的放电概率响应于在其感受野内呈现最佳对齐的光条，以接近40 Hz的峰值频率振荡。神经元放电模式与通过同一电极记录的振荡局部场电位的相位和振幅密切相关。局部场电位振荡的幅度是最大的，以响应刺激，匹配的取向和方向偏好的本地集群的神经元。丘脑背外侧膝状体核的单单位和多单位记录表明，在20-70 Hz的范围内，神经元放电概率的振荡没有证据。结果表明，在视觉皮层的局部神经元群体从事刺激特定的同步振荡从皮质内机制。振荡响应可以提供一种一般机制，通过该机制，在空间上分离的皮层区域中的活动模式在时间上是协调的。
In areas 17 and 18 of the cat visual cortex the firing probability of neurons, in response to the presentation of optimally aligned light bars within their receptive field, oscillates with a peak frequency near 40 Hz. The neuronal firing pattern is tightly correlated with the phase and amplitude of an oscillatory local field potential recorded through the same electrode. The amplitude of the local field-potential oscillations are maximal in response to stimuli that match the orientation and direction preference of the local cluster of neurons. Single and multiunit recordings from the dorsal lateral geniculate nucleus of the thalamus showed no evidence of oscillations of the neuronal firing probability in the range of 20-70 Hz. The results demonstrate that local neuronal populations in the visual cortex engage in stimulus-specific synchronous oscillations resulting from an intracortical mechanism. The oscillatory responses may provide a general mechanism by which activity patterns in spatially separate regions of the cortex are temporally coordinated.