Gottesmann C, Gandolfo G
Arch Ital Biol. 1986 Oct;124(4):257-69.
The rat and cat show just prior and sometimes after paradoxical sleep a short-lasting behavioral stage characterized by: i) frontal cortex high amplitude spindle bursts and low frequency theta activity in the dorsal hippocampus, and ii) the lowest ventrobasal complex transmission level of all sleep-waking stages. The duration of this "intermediate" stage is increased at the expense of paradoxical sleep by low doses of barbiturate. The intercollicular "cerveau isolé" preparation shows for hours the electrophysiological patterns of the intermediate stage. It is concluded that the intermediate stage of sleep corresponds to a forebrain massive deafferentation process leading to a functional disconnecting from the brainstem. For the survival of the species it is understandable that this behavioral stage is necessarily short lasting.
大鼠和猫在异相睡眠之前，有时在异相睡眠之后，会出现一个短暂的行为阶段，其特征为：i）额叶皮质高振幅纺锤波爆发以及背侧海马低频θ活动，ii）所有睡眠-觉醒阶段中腹侧基底复合体传递水平最低。低剂量巴比妥酸盐会以牺牲异相睡眠为代价增加这个“中间”阶段的时长。间脑间“孤立脑”标本数小时内呈现出中间阶段的电生理模式。得出的结论是，睡眠的中间阶段对应于前脑大量传入神经阻滞过程，导致与脑干功能性断开连接。就物种生存而言，可以理解这个行为阶段必然持续时间短暂。
