Gentilucci M, Bon L, Camarda R, Matelli M, Rizzolatti G
Boll Soc Ital Biol Sper. 1984 Apr 30;60(4):831-7.
Single neurons and polispike activity were recorded from the superior colliculus of anesthetized, behaving monkeys. In agreement with previous findings neurons of the superficial layers responded exclusively to visual stimuli. In the intermediate layers most neurons were oculomotor, although some of them showed also a visual receptive field. No neurons responding to tactile or auditory stimuli were found. Occasionally the discharge of an oculomotor neuron increased if the ocular movement was triggered by a visual or an acoustical stimulus. Rare tacticle and auditory neurons were recorded in deep layers. However their receptive fields were difficult to map and their responses lacked the precision of the responses of the specific acoustic and tactile areas. Electrical stimulation of the SC produced contralateral eye and head movements, the threshold being high in the superficial layers and low in the intermediate and deep ones. In the deep layers complex limb and trunk movements could be also elicited. In conclusion, in contrast with carnivores and other mammals, the primate superior colliculus appears to be dominated by the visual modality.
在麻醉且行为正常的猴子的上丘记录单个神经元和多峰放电活动。与先前的研究结果一致，浅层神经元仅对视觉刺激有反应。在中间层，大多数神经元是动眼神经的，尽管其中一些也显示有视觉感受野。未发现对触觉或听觉刺激有反应的神经元。偶尔，如果视觉或听觉刺激触发眼球运动，动眼神经神经元的放电会增加。在深层记录到罕见的触觉和听觉神经元。然而，它们的感受野难以绘制，并且它们的反应缺乏特定听觉和触觉区域反应的精确性。对上丘的电刺激会引起对侧眼睛和头部运动，浅层的阈值较高，中间层和深层的阈值较低。在深层还可引发复杂的肢体和躯干运动。总之，与食肉动物和其他哺乳动物不同，灵长类动物的上丘似乎以视觉模态为主导。
