LATENCY FOR SACCADIC EYE MOVEMENT
LATENCY FOR SACCADIC EYE MOVEMENT
复制标题
DOI：
10.1364/josa.57.001030
复制
发表时间：
1967-01-01
影响因子：
--
通讯作者：
SASLOW, MG
中科院分区：
文献类型：
--
作者：
SASLOW, MG
在严格控制的条件下，在任何给定试验上的刺激位移是从2个、4个或8个可能位移的组中随机选择的试验块中，侧视眼球运动的潜伏期不会改变。此外，受试者接受过这样的析取潜伏期任务的训练，然后被呈现给只有一个可能的刺激移位的试验组，概率为1.00、0.75、0.50或0.25，对该移位的潜伏期与它被嵌入其中一个析取集合时的潜伏期相同。这些结果与关于刺激位置的知识决定眼跳潜伏期的报道相冲突。当每个试验上的眼跳在该试验上的刺激的控制下时，可能的刺激移位集合的大小不影响到特定移位的潜伏期。之前使用单一刺激位移对眼跳潜伏期的估计被低估了，因为受试者没有接受过在分离任务中跟随刺激位移的训练。如果要将眼跳潜伏期完全归因于刺激因素的控制，则需要小心。
Under carefully controlled conditions, in blocks of trials in which the stimulus displacement on any given trial is randomly selected from a group of 2, 4, or 8 possible displacements, latency for lateral saccadic eye movement does not change. Moreover, a subject trained on such a disjunctive latency task, and then presented with blocks of trials in which there is only one possible stimulus displacement, of probability 1.00, 0.75, 0.50, or 0.25, displays the same latency to that displacement as when it was embedded in one of the disjunctive sets. These results conflict with reports that knowledge of stimulus location determines saccade latency. When the saccade on each trial is under the control of the stimulus on that trial, the size of the set of possible stimulus displacements does not affect latency to a particular displacement. Previous estimates of saccade latency using single stimulus displacements were underestimates, because subjects were not trained to follow stimulus displacement in a disjunctive task. Care is required if saccade latencies are to be entirely attributed to control by stimulus factors.