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用玻璃微电极记录了乌拉坦麻醉并用三碘季铵酚麻痹的大鼠下丘脑腹内侧核区(HVM)及邻近脑区(室旁核,下丘脑前区,下丘脑前内侧核)的自发单位活动。在HVM区82个单位中有8个表现短周期性活动的单位。其中又可分为两类:(1)由活动相和沉默相相互交替的周期性活动;(2)逐渐作缓慢变化的周期性活动。每个周期的时间由1～5分钟不等。腹腔注射戊巴比妥钠后,周期性消失,,且平均放电率有所提高。这一结果提示HVM区神经元的周期性活动的抑制相不是该神经元固有的活动特征,而可能由神经元回路中的抑制作用所致。印防己毒素的效应很不一致。邻近HVM的其他脑区47个单位未发现周期性活动。
Glass microelectrodes were used to record spontaneous spontaneous release of hypothalamic ventrolateral medulla (HVM) and adjacent brain regions (paraventricular nuclei, hypothalamic anterior region, hypothalamic anterior medial nucleus) of urethane anesthetized with triiodide quaternary ammonium phenol Unit activity. Among the 82 units in the HVM area, there are 8 units that exhibit short-term activity. There are two types of cyclical activities: (1) cyclical activities that alternate between the phases of activity and silence; and (2) cyclical activities that gradually change slowly. Each cycle of time from 1 to 5 minutes. Intraperitoneal injection of pentobarbital sodium, periodically disappear, and the average discharge rate increased. This result suggests that the inhibitory phase of the cyclical activity of neurons in the HVM zone is not an intrinsic activity characteristic of this neuron and may be due to the inhibition in the neuronal circuit. The effect of picrotoxin is very inconsistent. 47 units in other brain regions adjacent to HVM showed no periodic activity.