Zipser K, Lamme V A, Schiller P H
Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge 02139, USA.
J Neurosci. 1996 Nov 15;16(22):7376-89. doi: 10.1523/JNEUROSCI.16-22-07376.1996.
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 approximately 8 to 10 degrees 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.
我们研究了清醒的、行为中的猕猴V1区的额外感受野上下文调制。使用纹理显示来研究上下文调制，其中覆盖感受野（RF）的纹理在所有试验中都是相同的，但这种纹理的感知上下文可能会根据额外RF纹理元素的配置而变化。当视差、颜色、亮度和方向线索以各种方式定义以V1神经元的RF为中心的纹理图形时，我们发现了强大的上下文调制。我们发现上下文调制在中央凹旁具有约8至10度直径的空间范围。上下文调制与双眼竞争纹理显示以及具有简单表面遮挡示例的显示的感知体验相关。我们发现在刺激开始后80 - 100毫秒，V1区的上下文调制具有特征潜伏期，这可能使来自纹外区域的反馈成为这种效应的基础。
