Eye movements during REM sleep and imagination of visual scenes

Neuroreport
Andreas SprengerChristoph Helmchen

Abstract

It has been hypothesized that rapid eye movements (REMs) during sleep reflect the process of looking around in dreams. We questioned whether REMs differ from eye movements in wakefulness while imagining previously seen visual stimuli (dots, static images, videos). After looking at these stimuli individuals were asked to remember and imagine them. Subsequently, their REMs were recorded at the sleep laboratory. Kinematic parameters of REMs were similar to saccadic eye movements to remembered stimuli with closed eyes, irrespective of the stimulus type. In contrast, peak velocity of eye movements with open eyes was similar to REMs when semantic, but not nonsemantic, contents were imagined. Thus, REMs may be related to exploratory saccadic behaviour in the awake to remember visual stimuli.

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Citations

May 19, 2010·Brain : a Journal of Neurology·Laurène Leclair-VisonneauIsabelle Arnulf
Jan 19, 2016·Frontiers in Psychology·Sue Llewellyn
May 11, 2010·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Maren Lappe-OsthegeAndreas Sprenger
Apr 30, 2015·Neurobiology of Learning and Memory·Sue Llewellyn, J Allan Hobson
Dec 7, 2013·The Behavioral and Brain Sciences·Helene Sophrin Porte
Apr 27, 2019·Journal of Sleep Research·Julie A E ChristensenPoul Jennum
Aug 12, 2015·Nature Communications·Thomas AndrillonItzhak Fried

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