Suppression of monocular visual direction under fused binocular stimulation: evoked potential measurements.
Suppression of monocular visual direction under fused binocular stimulation: evoked potential measurements.
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DOI：
10.1167/5.1.4
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发表时间：
2005
影响因子：
1.8
通讯作者：
A. Norcia;S. McKee;Y. Bonneh;M. Pettet
中科院分区：
文献类型：
--
作者：
A. Norcia;S. McKee;Y. Bonneh;M. Pettet
实验记录了视觉诱发电位（vep）对一只眼睛的游标起始/偏移目标与另一只眼睛的匹配静态目标的反应。在一维随机条形图中引入一组偏移后，单眼反应在160 ms时出现负峰。静态目标本身不会产生可识别的VEP反应，但当与振荡游标目标双目融合时，它们会产生感知视觉方向的变化，从而影响VEP反应。一个与静态竖条融合的游标目标被认为在一个平面和一个破碎成两个交错的平面之间深度交替。对这种“表面断裂”的响应与对单目游标偏移的响应一样大或更大。当振荡游标与静态偏移游标（5'偏移）融合时，这种响应会大大减少，从而产生深度移动的隔离区域的感知。显然，VEP受到视觉方向变化的强烈驱动，这种变化会改变表面、纹理或轮廓的连续性。
Visual evoked potentials (VEPs) were recorded in response to a vernier onset/offset target presented to one eye that was combined with matching static targets in the other eye. The monocular response was dominated by a negative peak at 160 ms that occurred after a set of offsets was introduced into a one-dimensional random bar pattern. The static targets produced no discernible VEP response by themselves, but when fused binocularly with the oscillating vernier target, they produced shifts in perceived visual direction that influenced the VEP response. A vernier target fused with static vertical bars was perceived to alternate in depth between a flat surface and one broken into two interleaved surfaces. The response to this "surface-breaking" was as large or larger than the response to the monocular vernier offset. This response was much reduced when the oscillating vernier was fused with a static offset vernier (5' offset) that produced a percept of segregated regions moving in depth. Apparently, the VEP is strongly driven by shifts in visual direction that alter surface, texture, or contour contiguity.