MacKinnon D A, Gross C G, Bender D B
Acta Neurobiol Exp (Wars). 1976;36(1-2):169-80.
The superior colliculus has been implicated in visual orientation and localization in several mammalian species. To examine this possibility in rhesus monkeys, we trained monkeys to respond to one of six locations signaled by a small light of 5 s duration that was turned off immediately before they were allowed to respond. The locations were directly behind the light. After tectal lesions they continued to perform this task normally, but showed a severe deficit when the duration of the signal was reduced to 1 s. However, when the stimulus remained on throughout the trial and the site of the stimulus and response were further separated, performance of the animals with tectal lesions was normal. We suggest that this deficit in the accuracy of reaching guided by a transient visual stimulus may be related to the role of the superior colliculus in the control of eye movements.
在几种哺乳动物中，上丘与视觉定向和定位有关。为了在恒河猴中研究这种可能性，我们训练猴子对持续5秒的小灯光所指示的六个位置之一做出反应，在允许它们做出反应之前，灯光会立即熄灭。这些位置就在灯光的正后方。在顶盖受损后，它们继续正常执行这项任务，但当信号持续时间缩短到1秒时，就表现出严重的缺陷。然而，当刺激在整个试验过程中一直存在，并且刺激部位和反应部位进一步分开时，顶盖受损动物的表现是正常的。我们认为，由短暂视觉刺激引导的伸手准确性方面的这种缺陷可能与上丘在控制眼球运动中的作用有关。
