In this mini review, we summarize our findings regarding the brainstem neurons responsible for the postural, masseter, or pharyngeal muscle atonia observed during paradoxical sleep (PS) in freely moving cats. Both the pons and medulla contain neurons showing tonic activation selective to PS and atonia, referred to as PS/atonia-on-neurons. The PS/atonia-on neurons, characterized by their most slow conducting property and located in the peri-locus coeruleus alpha (peri-LCa) and adjacent LCa of the mediodorsal pontine tegmentum, play a critical executive role in the somatic and orofacial muscle atonia observed during PS. Slow conducting medullary PS/atonia-on neurons located in the nuclei reticularis magnocellularis (Mc) and parvocellularis (Pc) may play a critical executive role in the generation of, respectively, antigravity or orofacial muscle atonia during PS. In addition, either tonic or phasic cessation of activity of medullary serotonergic neurons may play an important role in the atonia of genioglossus muscles during PS via a mechanism of disfacilitation.

中文翻译：

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自由活动的猫自相矛盾的睡眠中，脑干神经元负责姿势，咬肌或咽肌无力。

在这个小型综述中，我们总结了关于自由移动猫的自相矛盾睡眠（PS）期间观察到的负责姿势，咬肌或咽肌无力的脑干神经元的发现。脑桥和延髓都含有神经元，表现出对PS和无瓣膜有选择性的强直激活，称为PS /神经元无瓣膜。PS / atonia-on神经元的特征在于其最慢的传导特性，位于中嗅桥脑桥盖膜的蓝位周围蓝α（peri-LCa）和相邻的LCa中，在躯体和口面肌无力中起关键作用在PS期间观察到。位于网状大核细胞核（Mc）和细小细胞核（Pc）的慢速传导性髓质PS /紧张性神经元可能分别在产生，PS期间出现反重力或口面肌无力。另外，在PS期间，延髓的5-羟色胺能神经元的活动性强直或阶段性停止可能在io舌肌无力中起重要作用。