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- W1977132011 abstract "Paradoxical sleep (PS) is composed of several characteristic “tonic” and “phasic” events. In this paper, it was shown that each of these “PS-subsystems” might be generated by distinct brainstem neuron groups and involved in the cholinergic, cholinoceptive, and mono amino ceptive mechanisms. In addition, it was suggested that the central mechanisms of PS consist of: (1) cholinergic PS-on neurons that discharge tonically and specifically during the periods of PS; and (2) monoaminergic (serotonergic, noradrenergic, and presumably also adrenergic) PS-off neurons that cease firing selectively during this period of sleep. The PS-on neurons play an executive role, while the PS-off ones play a permissive role in the generation of PS. The PS-on neurons are located both in the mediodorsal pontine tegmentum, especially the peri-LC alpha and medial part of the LC alpha, and in the ventromedial medulla, particularly the Mc. The PS-off neurons are located rather diffusely in the lower brainstem. There exist both excitatory interactions between the PS-on neurons, between the PS-off neurons and reciprocal inhibitory interactions between the PS-on and PS-off neurons. Periodically, these interactions lead to, by still unknown mechanisms, the excitation of all PS-on neurons and inhibition of all PS-off neurons, and, consequently, the appearance of PS. Paradoxical sleep (PS) is composed of several characteristic “tonic” and “phasic” events. In this paper, it was shown that each of these “PS-subsystems” might be generated by distinct brainstem neuron groups and involved in the cholinergic, cholinoceptive, and mono amino ceptive mechanisms. In addition, it was suggested that the central mechanisms of PS consist of: (1) cholinergic PS-on neurons that discharge tonically and specifically during the periods of PS; and (2) monoaminergic (serotonergic, noradrenergic, and presumably also adrenergic) PS-off neurons that cease firing selectively during this period of sleep. The PS-on neurons play an executive role, while the PS-off ones play a permissive role in the generation of PS. The PS-on neurons are located both in the mediodorsal pontine tegmentum, especially the peri-LC alpha and medial part of the LC alpha, and in the ventromedial medulla, particularly the Mc. The PS-off neurons are located rather diffusely in the lower brainstem. There exist both excitatory interactions between the PS-on neurons, between the PS-off neurons and reciprocal inhibitory interactions between the PS-on and PS-off neurons. Periodically, these interactions lead to, by still unknown mechanisms, the excitation of all PS-on neurons and inhibition of all PS-off neurons, and, consequently, the appearance of PS." @default.
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- W1977132011 date "1986-01-01" @default.
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- W1977132011 title "Central mechanisms of paradoxical sleep" @default.
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- W1977132011 doi "https://doi.org/10.1016/s0387-7604(86)80061-4" @default.
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