• Lancet neurology · Oct 2020

    Review

    Dreams and nightmares in healthy adults and in patients with sleep and neurological disorders.

    • Francesca Siclari, Katja Valli, and Isabelle Arnulf.
    • Center for Investigation and Research on Sleep and Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
    • Lancet Neurol. 2020 Oct 1; 19 (10): 849-859.

    AbstractDreams are experiences that occur during sleep, while we are disconnected from the environment. Thanks to recent progress in neuroimaging techniques, it is now becoming possible to relate dream features to specific patterns of brain activity. Some conditions occurring in patients with neurological disorders, such as lucid dreams and parasomnias, not only have diagnostic value, but also offer a window into the dream process. They show that dreaming is reflected in physiological signals, behaviours, and brain activity patterns, and that the body can enact dream content. Yet, the dream body can also be distinct from the real body; in their dreams, patients with congenital paraplegia can walk, those with sleep apnoea rarely suffocate, and phantom limb pain can disappear. These conditions provide valuable models for future studies investigating the mechanisms that underlie oneiric experiences.Copyright © 2020 Elsevier Ltd. All rights reserved.

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