Contextual Modulation in Primary Visual Cortex
Contextual Modulation in Primary Visual Cortex
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DOI：
10.1523/jneurosci.16-22-07376.1996
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发表时间：
1996-11
期刊：
影响因子：
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通讯作者：
K. Zipser;Victor A. F. Lamme;P. H. Schiller
中科院分区：
文献类型：
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作者：
K. Zipser;Victor A. F. Lamme;P. H. Schiller
我们研究了外感受野上下文调制清醒，行为猕猴的V1区。上下文调制研究使用纹理显示器，其中纹理覆盖的感受野（RF）是相同的，在所有试验中，但这种纹理的感知上下文可能会有所不同，这取决于配置的额外RF纹理元素。我们发现强大的上下文调制时，视差，颜色，亮度和方向线索不同地定义了一个纹理图集中在RF的V1神经元。我们发现上下文调制的空间范围为旁中央窝直径0.8至10°。上下文调制与知觉经验的双眼竞争性纹理显示器和显示器与表面遮挡的一个简单的例子。我们发现上下文调制V1有一个特征性的潜伏期为80-100毫秒刺激发作后，潜在地允许从纹外区的反馈，这种效果的基础。
We studied extra-receptive field contextual modulation in area V1 of awake, behaving macaque monkeys. Contextual modulation was studied using texture displays in which texture covering the receptive field (RF) was the same in all trials, but the perceptual context of this texture could vary depending on the configuration of extra-RF texture elements. We found robust contextual modulation when disparity, color, luminance, and orientation cues variously defined a textured figure centered on the RF of V1 neurons. We found contextual modulation to have a spatial extent of ∼8 to 10° diameter parafoveally. Contextual modulation correlated with perceptual experience of both binocularly rivalrous texture displays and of displays with a simple example of surface occlusion. We found contextual modulation in V1 to have a characteristic latency of 80–100 msec after stimulus onset, potentially allowing feedback from extrastriate areas to underlie to this effect.