Phasic phenomena during P.S.

Paradoxical Sleep - A Study of its Nature and Mechanisms

Michel Jouvet
Progress In Brain Research Vol. 18 Sleep Mechanisms 1965

TABLE OF CONTENTS

Introduction

Evidence of the duality of the states of sleep

(a) EEG and behavioural findings

(b) Phylogenetic findings

(c) Ontogenetic findings

(d) Functional findings

(e) Structural findings

Mechanisms of paradoxical sleep

(a) Producing P.S. as a reflex

(b) Results of deafferentations

(c) Role of the hypothalamus and pituitary

(d) Deprivation of P.S. in the pontile animal

(e) Effects of temperature on P.S. in the pontile animal

(f) Action of gamma-butyrolactone (G.B.L.)

(g) Osmolarity of the blood and paradoxical sleep

Discussion

(a) Duality of the states of sleep

(b) Mechanisms underlying the appearance of P.S.

Summary and Conclusions

Figures

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Figure 2 : Phasic phenomena during P.S.

Normal cat: 3 days after enucleation of both eyes. Monophasic peaks grouped in pseudo-spindles in the pontine reticular formation (PRF), the oculomotor nucleus (N. III), the lateral geniculate nucleus (Lat. gen.) and the visual cortex (Vis. Cx.). Note phasic twitching of the whiskers, the temporal muscles, and the minor muscles of the face, and absence of nuchal EMG activity.

Scale: 1 sec; 50 microV.