A Study of the Neurophysiological Mechanisms of Dreaming
M. Jouvet and D. Jouvet Electroenceph. Clin. Neurophysiol. 1963 Suppl. 24



Part 1

I. Two EEG patterns of physiological sleep in intact cats

II. The neural structures responsible for RPS

III. Structures responsible for somato-vegetative phenomena

IV. Mechanisms of the Rhombencephalic Phase of Sleep

V. Ontogenesis of the RPS

Part 2

A. Normal subjects

B. Patients with brain lesions




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Fig. 3 : Arousal and RPS in a chronic mesencephalic cat

Arousal and RPS in a chronic
mesencephalic cat

Total transection of the brain stem at the frontal plane A8.

I. Behavioral arousal. Spindles and slow waves at the cortical and thalamic level (Th), in front of the section. Low voltage fast activity in the pontine and mesencephalic reticular formation, behind the section. EMG activity of the neck muscles.

II. RPS. There is no change of the EEG activity rostral to the section (since the ponto-limbic pathways are interrupted). Behind the section "spindle" activity in the pontine reticular formation (FRP). Total disappearance of the EMG of the neck. FRM d and g: Bipolar recordings from the right and left part of the mesencephalic tegmentum.

Scale: 1 sec.

From Jouvet (1962), with kind permission of Arch. Ital. Biol. (full-text)

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