Morales F, Chase M H
Brain Res. 1981 Nov 30;225(2):279-95. doi: 10.1016/0006-8993(81)90836-2.
A correlated intracellular and extracellular study of lumbar motoneuron excitability during sleep and wakefulness was performed in the chronic, unanesthetized, undrugged, normally respiring cat. Experiments were designed to reveal the extent to which hypotonia during active sleep in mammals is dependent on postsynaptic inhibition of somatic motoneurons. Variations in the antidromic field potential, antidromic and orthodromic spike, EPSP, membrane input resistance and rheobasic current were studied. No change in motoneuron excitability occurred when quiet wakefulness was compared to quiet sleep. A decrease in excitability was present, due to postsynaptic inhibition, during active sleep. Further phasic decreases in excitability, also due to postsynaptic inhibition, occurred during active sleep in conjunction with clusters of rapid eye movements.
在慢性、未麻醉、未用药、正常呼吸的猫身上，进行了一项关于睡眠和清醒期间腰段运动神经元兴奋性的细胞内和细胞外相关研究。实验旨在揭示哺乳动物主动睡眠期间的肌张力减退在多大程度上依赖于躯体运动神经元的突触后抑制。研究了逆向场电位、逆向和正向动作电位、兴奋性突触后电位、膜输入电阻和基强度电流的变化。将安静清醒与安静睡眠相比较时，运动神经元兴奋性没有变化。在主动睡眠期间，由于突触后抑制，兴奋性降低。在主动睡眠期间，伴随着快速眼动簇，还会出现由于突触后抑制导致的兴奋性进一步阶段性降低。
