TEXTURE SEGREGATION IS PROCESSED BY PRIMARY VISUAL-CORTEX IN MAN AND MONKEY - EVIDENCE FROM VEP EXPERIMENTS
TEXTURE SEGREGATION IS PROCESSED BY PRIMARY VISUAL-CORTEX IN MAN AND MONKEY - EVIDENCE FROM VEP EXPERIMENTS
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DOI：
10.1016/0042-6989(92)90022-b
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发表时间：
1992-05-01
期刊：
影响因子：
1.8
通讯作者：
SPEKREIJSE, H
中科院分区：
文献类型：
--
作者：
LAMME, VAF;VANDIJK, BW;SPEKREIJSE, H
我们研究了纹理分离的过程是否可以分配到一个特定的视觉皮层区域。我们设计了一种刺激来揭示一种机制的存在，这种机制对棋盘格特别敏感，它完全由构成线段的方向差异导致的纹理分离所定义。我们记录了人类和清醒的猴子对这种刺激的诱发电位。两种类型的受试者都可以记录到不同的成分，即纹理分离灵敏度。它的存在取决于纹理的空间范围，在某种程度上与棋盘的可感知性相关。这种差异反应可以通过等效偶极估计定位于初级视觉皮层。
We investigated whether the process of texture segregation can be allocated to a specific visual cortical area. We designed a stimulus to reveal the presence of a mechanism, which is specifically sensitive to a checkerboard, that is solely defined by textures segregating due to orientation differences of the constituting line segments. We recorded evoked potentials to this stimulus in man and awake monkey. A difference component, signalling texture segregation sensitivity, could be recorded from both types of subjects. Its presence depended on the spatial extent of the textures, in a manner correlating with the perceptibility of the checkerboard. This difference response could be localized in primary visual cortex by means of equivalent dipole estimations.