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Sleep‐dependent consolidation of face recognition and its relationship to REM sleep duration, REM density and Stage 2 sleep spindles
Author(s) -
Solomonova Elizaveta,
Stenstrom Philippe,
Schon Emilie,
Duquette Alexandra,
Dubé Simon,
O'Reilly Christian,
Nielsen Tore
Publication year - 2017
Publication title -
journal of sleep research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 117
eISSN - 1365-2869
pISSN - 0962-1105
DOI - 10.1111/jsr.12520
Subject(s) - sleep (system call) , sleep spindle , non rapid eye movement sleep , consolidation (business) , memory consolidation , psychology , slow wave sleep , audiology , neuroscience , medicine , eye movement , electroencephalography , computer science , business , hippocampus , operating system , accounting
Summary Face recognition is a highly specialized capability that has implicit and explicit memory components. Studies show that learning tasks with facial components are dependent on rapid eye movement and non‐rapid eye movement sleep features, including rapid eye movement sleep density and fast sleep spindles. This study aimed to investigate the relationship between sleep‐dependent consolidation of memory for faces and partial rapid eye movement sleep deprivation, rapid eye movement density, and fast and slow non‐rapid eye movement sleep spindles. Fourteen healthy participants spent 1 night each in the laboratory. Prior to bed they completed a virtual reality task in which they interacted with computer‐generated characters. Half of the participants ( REMD group) underwent a partial rapid eye movement sleep deprivation protocol and half ( CTL group) had a normal amount of rapid eye movement sleep. Upon awakening, they completed a face recognition task that contained a mixture of previously encountered faces from the task and new faces. Rapid eye movement density and fast and slow sleep spindles were detected using in‐house software. The REMD group performed worse than the CTL group on the face recognition task; however, rapid eye movement duration and rapid eye movement density were not related to task performance. Fast and slow sleep spindles showed differential relationships to task performance, with fast spindles being positively and slow spindles negatively correlated with face recognition. The results support the notion that rapid eye movement and non‐rapid eye movement sleep characteristics play complementary roles in face memory consolidation. This study also raises the possibility that fast and slow spindles contribute in opposite ways to sleep‐dependent memory consolidation.