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Dreaming: a neurological view

Matthias Bischof, Philipp O. Valko, Claudio L. Bassetti

Schweizer Archiv für Neurologie und Psychiatrie December 7, 2005 DOI: 10.4414/sanp.2005.01658 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Review Peer reviewed
Topics Dreaming
Citations 5
Key findings The authors argue that dreaming arises from activation of brainstem, thalamo-limbic, and medial temporo-occipital areas with inactivation of dorsolateral prefrontal areas, and that dream abnormalities in neurological disorders - including reduced or absent dreaming, increased dream frequency, altered content, REM sleep behaviour disorder, and wake-time hallucinations - remain poorly studied. They contend that assessing these changes has diagnostic, therapeutic, and prognostic significance and can cause distress for patients and their bed partners.

Abstract

Dreaming is the mental activity of REM (and less commonly NREM) sleep.It is characterised by a perception of self, inner and outer world that is distinct from that of wakefulness.Neurophysiological and neuroimaging studies suggest that dreaming arises from activation of brainstem, thalamo-limbic and medial temporo-occipital areas and inactivation of dorsolateral prefrontal areas.Dream abnormalities in neurological disorders have poorly been studied.They include a reduction/cessation of dreaming (Charcot-Wilbrand syndrome), an increase in dream frequency, changes in dream contents and accompaniments (including REM sleep behaviour disorder) and the occurrence of dream-like experiences (hallucinations) during wakefulness and wake-sleep/sleep-wake transitions.Dream changes in association with neurological conditions including primary sleep disorders (e.g.narcolepsy, REM sleep behaviour disorder [RBD], nightmares), stroke and Parkinson's syndrome are reviewed.Assessment of altered dreaming and dreamlike experiences can be of clinical significance because of their diagnostic and therapeutic implications (RBD, hallucinations), prognostic significance (hallucinations) and distress that they can have for patients and their bed partners (e.g.nightmares, hallucinations, RBD).In addition, systematic studies of dream and dream-like experiences are expected to offer unique insights into the brain, mind and emotions of neurological patients.

Comparable studies

Other narrative reviews on dreaming, most cited first.

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