Gadzhieva N A, Dzhavadze D G, Rzaeva N M
Fiziol Zh SSSR Im I M Sechenova. 1990 Aug;76(8):1001-9.
In alert rabbits, stimulation of posterior hypothalamus induced short-latency responses in the visual cortex and affected the formation of the EPs to light. Depending on the intervals between the stimuli, either initial extinction of the EPs (1-15 msec) or subsequent selective facilitation of its positive component with simultaneous depression of negative (20-100 msec) one, or complete recovery of the response (200-300 msec), were observed. Aminazine and benactizine made the effect of the posterior hypothalamic stimulation on visual EPs to light less obvious and changed its dynamics. Other findings suggested an inhibitory effect of the mesencephalic RF on the activity of hypothalamo-cortical input. A role of phasic mechanism of hypothalamic control in realization of visual cortex's perceptive function, is discussed.
在警觉的家兔中，刺激下丘脑后部可在视觉皮层诱发短潜伏期反应，并影响对光刺激诱发电位（EP）的形成。根据刺激之间的间隔时间，可观察到以下情况：诱发电位最初消失（1 - 15毫秒），或随后其正波成分选择性增强同时负波成分受到抑制（20 - 100毫秒），或反应完全恢复（200 - 300毫秒）。氯丙嗪和苯乃嗪使下丘脑后部刺激对视觉诱发电位的影响不那么明显，并改变了其动态变化。其他研究结果表明中脑网状结构对下丘脑 - 皮层输入的活动具有抑制作用。本文讨论了下丘脑控制的相位机制在视觉皮层感知功能实现中的作用。
