Fischer B, Weber H
Abteilung für Neurologie und Neurophysiologie, Universität Freiburg, Federal Republic of Germany.
Exp Brain Res. 1988;73(3):577-82. doi: 10.1007/BF00406616.
Two monkeys were presented with a task in which they were free to make a saccade to one of two simultaneously presented targets. The data from both animals show that the preference for one of the targets depends on at least two factors: (i) active and attentive fixation of the central fixation point at the time when the two targets occur; (ii) relative position of the two targets in the visual field. The results were different for the two monkeys with respect to the role of stimulus position in the visual field. However, both animals changed their preference systematically when the fixation point was turned off before the two targets occurred as compared to the case in which the fixation point remained visible. With respect to the paradigm (fixation point off versus fixation point on) the stimulus selection of either animal was constant throughout the several weeks of testing.
给两只猴子布置了一项任务，在该任务中它们可以自由地向同时呈现的两个目标之一进行扫视。来自两只动物的数据表明，对其中一个目标的偏好至少取决于两个因素：(i) 当两个目标出现时，对中央注视点的主动且专注的注视；(ii) 两个目标在视野中的相对位置。关于视野中刺激位置的作用，两只猴子的结果有所不同。然而，与注视点保持可见的情况相比，当在两个目标出现之前关闭注视点时，两只动物都系统性地改变了它们的偏好。就范式（注视点关闭与注视点打开）而言，在数周的测试过程中，任何一只动物的刺激选择都是恒定的。
