Doty R W
Ann N Y Acad Sci. 1977;290:139-51. doi: 10.1111/j.1749-6632.1977.tb39723.x.
A type of unit discharge, termed "luxotonic," has been found in the striate cortex of unanesthetized squirrel monkeys and macaques.6, 21 The firing frequency of these units shows relatively little adaptation, continues indefinitely (hours), and reflects the level of diffuse illumination of the eye. The more numerous "photergic" units discharge more rapidly in the light, whereas "scotergic" units fire fastest in the dark (or at luminance levels below threshold for cones). Luxotonic activity is abolished by anesthesia and has not been described for striate cortex of other species. Primates also display a profound alteration in the EEG of striate cortex following elimination of all retinal input.32 Since this change is far more drastic than that produced by blindness in other species, it is natural to inquire whether it is related to the loss of the normally prominent luxotonic activity. When the blind monkey sleeps, the bizarre EEG is replaced by patterns wholly normal in appearance,32 indicating that some nonvisual system has extensive access to striate cortex in this state.
在未麻醉的松鼠猴和猕猴的纹状皮层中发现了一种称为“明适应型”的单位放电。6, 21这些单位的放电频率显示出相对较少的适应性，可无限期持续（数小时），并反映眼睛的漫射光照水平。数量较多的“光反应性”单位在光照下放电更快，而“暗反应性”单位在黑暗中（或在锥体阈值以下的亮度水平）放电最快。明适应型活动可被麻醉消除，并且尚未在其他物种的纹状皮层中描述过。在消除所有视网膜输入后，灵长类动物的纹状皮层脑电图也会出现深刻变化。32由于这种变化比其他物种失明所产生的变化要剧烈得多，因此很自然地会探究它是否与通常突出的明适应型活动的丧失有关。当盲猴睡觉时，怪异的脑电图会被外观完全正常的模式所取代，32这表明在这种状态下，一些非视觉系统可以广泛地进入纹状皮层。
