Total Sleep Deprivation Impairs Lateralization of Spatial Working Memory in Young Men
Total sleep deprivation (TSD) negatively affects cognitive function. Previous research has focused on individual variation in cognitive function following TSD, but we know less about how TSD influences the lateralization of spatial working memory. This study used event-related-potential techniques t...
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Published in | Frontiers in neuroscience Vol. 14; p. 562035 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Lausanne
Frontiers Research Foundation
06.10.2020
Frontiers Media S.A |
Subjects | |
Online Access | Get full text |
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Summary: | Total sleep deprivation (TSD) negatively affects cognitive function. Previous research has focused on individual variation in cognitive function following TSD, but we know less about how TSD influences the lateralization of spatial working memory. This study used event-related-potential techniques to explore asymmetry in spatial-working-memory impairment. Fourteen healthy male participants performed a two-back task with electroencephalogram (EEG) recordings conducted at baseline and after 36 h of TSD. We selected 12 EEG points corresponding to left and right sides of the brain, then observed changes in N2 and P3 components related to spatial working memory. Before TSD, P3 amplitude differed significantly between the left and right sides of the brain. This difference disappeared after TSD. Compared with baseline, P3 amplitude decreased, for a duration as extended as the prolonged latency of N2 components. After 36 h of TSD, P3 amplitude decreased more in the right hemisphere than the left. We therefore conclude that TSD negatively affected spatial working memory, possibly through removing the right hemisphere advantage. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 This article was submitted to Sleep and Circadian Rhythms, a section of the journal Frontiers in Neuroscience Edited by: Andrea Romigi, Istituto Neurologico Mediterraneo Neuromed (IRCCS), Italy Reviewed by: Camilla L. Patti, Federal University of São Paulo, Brazil; Catello Vollono, Catholic University of the Sacred Heart, Italy |
ISSN: | 1662-453X 1662-4548 1662-453X |
DOI: | 10.3389/fnins.2020.562035 |