The topography of scalp potentials evoked by pattern pulse stimuli.
The topography of scalp potentials evoked by pattern pulse stimuli.
复制标题
由模式脉冲刺激引起的头皮电位地形。
DOI：
10.1016/0042-6989(87)90006-x
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发表时间：
1987
期刊：
影响因子：
1.8
通讯作者：
Srebro,R
中科院分区：
文献类型：
--
作者：
Srebro,R
模式脉冲刺激在人类视觉皮层的两个不同区域中以时间顺序引起活动。较早的响应区域（隐式时间93毫秒）被定位到Oz附近的相对较小的区域。它的地形是非常敏感的唤起刺激的位置在视野中，它是由一个代表性的视野附近的垂直子午线。后反应皮层区（隐式时间131毫秒）大于前反应皮层区。它的内侧边界接触早期反应皮层区域的外侧边界，并向外侧延伸数厘米。它的地形对诱发刺激在视野中的位置不太敏感。对同侧场的刺激在较早响应的皮层区域引起弱的或不可测量的活动，但通常在较晚响应的皮层区域的外侧边界附近引起可测量的活动。这些结果表明，较早反应的皮质区是纹状皮质，较晚反应的皮质区由视觉区V2、V3、V3A和V4组成。
Pattern pulse stimuli evoke activity in two distinct regions of the human visual cortex in temporal sequence. The earlier responding region (implicit time 93 msec) is localized to a relatively small region near Oz. Its topography is very sensitive to the position of the evoking stimulus in the visual field; it is dominated by a representation of the visual field near the vertical meridian. The later responding cortical region (implicit time 131 msec) is larger than the earlier one. Its medial border touches the lateral border of the earlier responding cortical region and it extends several cm laterally. Its topography is much less sensitive to the position of the evoking stimulus in the visual field. Stimuli presented to the ipsilateral field evoke either weak or no measurable activity in the earlier responding cortical region but often evoke measurable activity near the lateral boundary of the later responding cortical region. These results suggest that the earlier responding cortical region is striate cortex and that the later responding cortical region is composed of visual areas V2, V3, V3A, and V4.