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Out-of-body experiences in relation to lucid dreaming and sleep paralysis: A theoretical review and conceptual model.

Teresa Campillo-Ferrer, Adriana Alcaraz-Sánchez, Ema Demšar, Hsin-Ping Wu, Martin Dresler, Jennifer Windt, Olaf Blanke

Neuroscience & Biobehavioral Reviews August 1, 2024 DOI: 10.1016/j.neubiorev.2024.105770 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Review Peer reviewed
Topics Altered states of consciousness Dreaming Lucid dreaming
Keywords Consciousness Depersonalization Dissociated rem states Lucid dreams Out-of-body experiences Sleep paralysis Sleep-onset rem periods
Citations 14
Key findings Maintaining consciousness during sleep-onset REM periods may facilitate sleep-related out-of-body experiences.

Abstract

Out-of-body experiences (OBEs) are characterized by the subjective experience of being located outside the physical body. Little is known about the neurophysiology of spontaneous OBEs, which are often reported by healthy individuals as occurring during states of reduced vigilance, particularly in proximity to or during sleep (sleep-related OBEs). In this paper, we review the current state of research on sleep-related OBEs and hypothesize that maintaining consciousness during transitions from wakefulness to REM sleep (sleep-onset REM periods) may facilitate sleep-related OBEs. Based on this hypothesis, we propose a new conceptual model that potentially describes the relationship between OBEs and sleep states. The model sheds light on the phenomenological differences between sleep-related OBEs and similar states of consciousness, such as lucid dreaming (the realization of being in a dream state) and sleep paralysis (feeling paralyzed while falling asleep or waking up), and explores the potential polysomnographic features underlying sleep-related OBEs. Additionally, we apply the predictive coding framework and suggest a connecting link between sleep-related OBEs and OBEs reported during wakefulness.

Comparable studies

Other narrative reviews on lucid dreaming, most cited first.

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