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Disrupted integration of sensory stimuli with information about the movement of the body as a mechanism explaining LSD-induced experience.

Grzegorz R Juszczak

Medical Hypotheses March 1, 2017 DOI: 10.1016/j.mehy.2017.01.022 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Theoretical or philosophical paper Peer reviewed
Topics LSD
Citations 4
Key points Proposes that LSD-induced stimulation of 5-HT2a receptors disrupts integration of sensory stimuli with body-movement information, causing illusory movement perceptions.

Abstract

LSD (lysergic acid diethylamide) is a model psychedelic drug used to study mechanism underlying the effects induced by hallucinogens. However, despite advanced knowledge about molecular mechanism responsible for the effects induced by LSD and other related substances acting at serotonergic 5-HT2a receptors, we still do not understand how these drugs trigger specific sensory experiences. LSD-induced experience is characterised by perception of movement in the environment and by presence of various bodily sensations such as floating in space, merging into surroundings and movement out of the physical body (the out-of-body experience). It means that a large part of the experience induced by the LSD can be simplified to the illusory movement that can be attributed to the self or to external objects. The phenomenology of the LSD-induced experience has been combined with the fact that serotonergic neurons provide all major parts of the brain with information about the level of tonic motor activity, occurrence of external stimuli and the execution of orienting responses. Therefore, it has been proposed that LSD-induced stimulation of 5-HT2a receptors disrupts the integration of the sensory stimuli with information about the movement of the body leading to perception of illusory movement.

Comparable studies

Other theoretical and historical papers on LSD, most cited first.

Study Year Design Participants
The Experimental Use of Psychedelic (LSD) Psychotherapy 1970 Historical analysis
LSD: My Problem Child 1981 Historical analysis
On the Use and Abuse of LSD 1968 Theoretical or philosophical paper
The Use of Music in Psychedelic (LSD) Psychotherapy 1972 Theoretical or philosophical paper
Flashbacks: Recurrent Intrusive Images After the Use of LSD 1969 Theoretical or philosophical paper

Citations in the library

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