Visualizing the perisaccadic shift of spatiotopic coordinates
Visualizing the perisaccadic shift of spatiotopic coordinates
复制标题
可视化时空坐标的逐跳变化
DOI：
10.3758/bf03211919
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
D. R. Lucas
中科院分区：
文献类型：
--
作者：
W. Hershberger;J. S. Jordan;D. R. Lucas
在水平扫视过程中，点光源的闪烁将水平阵列投射到视网膜上。感知（幻影）阵列的尾端的明显视觉方向反映了在扫视结束时已经完成的空间位置坐标的近扫视移位的量。四个人，越过闪光灯向右扫视8°，判断幻影阵列左（尾）端相对于标准8°阵列左端的水平视觉方向，标准8°阵列在扫视开始前将图像投射到视网膜上。平均而言，当体模阵列中的最后一次闪光在标准阵列左端图像右侧7.4°的视网膜上成像时，左端似乎对齐。这个结果意味着空间位置坐标的移位在扫视结束时实际上完成。
A point light source flickering on and off during a horizontal saccade projects a horizontal array onto the retina. The apparent visual direction of the tail end of the perceived (phantom) array reflects the amount of perisaccadic shift of spatiotopic coordinates that has been completed by the end of the saccade. Four men, saccading 8° to the right across a flashing light, judged the horizontal visual direction of the left (tail) end of the phantom array relative to the left end of a standard 8° array that had projected an image onto the retina before the saccade began. On average, the left ends appeared to be aligned when the last flash in the phantom array was imaged on the retina 7.4° to the right of the image of the left end of the standard array. This result implies that the shift of spatiotopic coordinates is virtually complete by the end of the saccade.