Journal ArticleDOI
Stimulus-elicited behavior in rapid eye movement sleep without atonia
TLDR
The acoustic startle reflex (ASR), orienting (OR), and ponto-geniculo-occipital waves (PGOE) elicited by tones during W, REM, REM-A, and non-REM (NREM) resulted in OR being most complete in cats with the most elaborate spontaneous behavior, and PGOE had similar characteristics in both groups.Abstract:
Alert wakefulness (W) and rapid eye movement sleep (REM) are remarkably similar on several measures of brain activity, but 2 differences in REM are reduced sensory responsiveness and atonia in postural muscles. Pontine tegmental lesions create REM without atonia (REM-A), releasing motor behavior. In 9 cats, we studied the acoustic startle reflex (ASR), orienting (OR), and ponto-geniculo-occipital waves (PGO E ) elicited by tones during W, REM, REM-A, and non-REM (NREM). OR occurred in W and REM-A, being most complete in cats with the most elaborate spontaneous behavior. ASR occurred in W, NREM, and REM-A in lesioned cats. In normal cats, ASR rarely appeared in NREM and REM. PGO E had similar characteristics in both groups. The similarity of REM to W is particularly obvious when cats lack motoneuronal inhibition.read more
Citations
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REM sleep behavior disorder: clinical, developmental, and neuroscience perspectives 16 years after its formal identification in SLEEP.
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REM sleep behavior disorder and REM sleep without atonia in Parkinson's disease.
Jean-François Gagnon,Marc-André Bédard,Maria Livia Fantini,Dominique Petit,Michel Panisset,Sylvie Rompré,Julie Carrier,Jacques Montplaisir +7 more
TL;DR: RBD and REM sleep without atonia are frequent in PD as shown by PSG recordings, and their cases may represent preclinical forms of RBD associated with PD.
Journal ArticleDOI
The reinterpretation of dreams: An evolutionary hypothesis of the function of dreaming
TL;DR: In this paper, the authors put forward the hypothesis that the biological function of dreaming is to simulate threatening events, and to rehearse threat perception and threat avoidance, which is supported by empirical evidence from normative dream content, children's dreams, recurrent dreams, nightmares, post traumatic dreams, and the dreams of hunter-gatherers.
Journal ArticleDOI
REM sleep parasomnias.
TL;DR: The three states of mammalian being--wakefulness, REM sleep, and NREM sleep--are not mutually exclusive and may occur simultaneously, oscillate rapidly, or appear in dissociated or incomplete form to produce primary sleep parasomnias.
Journal ArticleDOI
REM sleep characteristics in narcolepsy and REM sleep behavior disorder.
Yves Dauvilliers,Sylvie Rompré,Jean-François Gagnon,Mélanie Vendette,Dominique Petit,Jacques Montplaisir +5 more
TL;DR: Alarming abnormalities in REM sleep motor regulation with an increased frequency of REM sleep without atonia, phasic EMG events and PLMS in narcoleptic patients when compared to controls are demonstrated.
References
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Journal ArticleDOI
A cholinergic mechanism in the brainstem reticular formation: induction of paradoxical sleep.
TL;DR: It is concluded that the receptor sites involved are muscarinic, and that the effects described most probably occur as a result of the selective activation of inhibitory neurones.