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Published on: January 25, 2016

REM sleep induction by physostigmine infusion during sleep.

N Sitaram, R J Wyatt, S Dawson

Science (New York, N.Y.)

|March 26, 1976

Summary

Physostigmine, an anticholinesterase, was intravenously administered to volunteers. It induced REM sleep during non-REM sleep and woke subjects during REM sleep, suggesting a role for cholinergic mechanisms in sleep regulation.

Area of Science:

Neuroscience
Sleep Medicine
Pharmacology

Background:

Cholinergic systems are implicated in various brain functions, including arousal and sleep.
The precise role of acetylcholine in regulating sleep stages, particularly REM sleep, remains incompletely understood.

Purpose of the Study:

To investigate the effects of physostigmine, a cholinergic agent, on sleep-wake states in humans.
To explore the involvement of cholinergic mechanisms in the induction of REM sleep and cortical arousal.

Main Methods:

Seven healthy volunteers received a 0.5 mg intravenous dose of physostigmine.
Physostigmine administration occurred during both REM and non-REM sleep stages.
Subject responses, including waking and sleep stage induction, were monitored.

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Main Results:

Intravenous physostigmine administration during REM sleep resulted in waking the subjects.
Physostigmine administration during non-REM sleep successfully induced REM sleep.
These findings indicate a significant impact of cholinergic activity on sleep architecture.

Conclusions:

Cholinergic mechanisms are crucial for the induction of REM sleep.
Acetylcholine plays a key role in modulating cortical arousal mechanisms.
Pharmacological modulation of cholinergic systems offers potential avenues for understanding and treating sleep disorders.