Assessing sleep consciousness within subjects using a serial awakening paradigm.

Détails

ID Serval
serval:BIB_7515BB14BBC3
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Assessing sleep consciousness within subjects using a serial awakening paradigm.
Périodique
Frontiers in psychology
Auteur(s)
Siclari F., Larocque J.J., Postle B.R., Tononi G.
ISSN-L
1664-1078
Statut éditorial
Publié
Date de publication
2013
Volume
4
Pages
542
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: epublish
Résumé
Dreaming-a particular form of consciousness that occurs during sleep-undergoes major changes in the course of the night. We aimed to outline state-dependent features of consciousness using a paradigm with multiple serial awakenings/questionings that allowed for within as well as between subject comparisons. Seven healthy participants who spent 44 experimental study nights in the laboratory were awakened by a computerized sound at 15-30 min intervals, regardless of sleep stage, and questioned for the presence or absence of sleep consciousness. Recall without content ("I was experiencing something but do not remember what") was considered separately. Subjects had to indicate the content of the most recent conscious experience prior to the alarm sound and to estimate its duration and richness. We also assessed the degree of thinking and perceiving, self- and environment-relatedness and reflective consciousness of the experiences. Of the 778 questionings, 5% were performed during wakefulness, 2% in stage N1, 42% in N2, 33% in N3, and 17% in rapid eye movement (REM) sleep. Recall with content was reported in 34% of non-REM and in 77% of REM sleep awakenings. Sleep fragmentation inherent to the study design appeared to only minimally affect the recall of conscious experiences. Each stage displayed a unique combination of characteristic features of sleep consciousness. In conclusion, our serial awakening paradigm allowed us to collect a large and representative sample of conscious experiences across states of being. It represents a time-efficient method for the study of sleep consciousness that may prove particularly advantageous when combined with techniques such as functional MRI and high-density EEG.

Pubmed
Open Access
Oui
Création de la notice
21/03/2017 17:19
Dernière modification de la notice
20/08/2019 15:32
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