Vestibular control of standing balance following 24 h of sleep deprivation.

Autor: Copeland PV; School of Health and Exercise Sciences, Faculty of Health and Social Development, The University of British Columbia Okanagan, ART 360 (Arts Building), 1147 Research Road, Kelowna, BC, V1V 1V7, Canada., Trotman ML; School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, QLD, Australia., Kang HJ; School of Health and Exercise Sciences, Faculty of Health and Social Development, The University of British Columbia Okanagan, ART 360 (Arts Building), 1147 Research Road, Kelowna, BC, V1V 1V7, Canada., McNeil CJ; School of Health and Exercise Sciences, Faculty of Health and Social Development, The University of British Columbia Okanagan, ART 360 (Arts Building), 1147 Research Road, Kelowna, BC, V1V 1V7, Canada., Dalton BH; School of Health and Exercise Sciences, Faculty of Health and Social Development, The University of British Columbia Okanagan, ART 360 (Arts Building), 1147 Research Road, Kelowna, BC, V1V 1V7, Canada. brian.dalton@ubc.ca.
Jazyk: angličtina
Zdroj: Experimental brain research [Exp Brain Res] 2024 Nov; Vol. 242 (11), pp. 2545-2556. Date of Electronic Publication: 2024 Sep 17.
DOI: 10.1007/s00221-024-06918-4
Abstrakt: Sleep deprivation alters cognitive and sensorimotor function, but its effects on the control of standing balance are inconclusive. The vestibular system is critical for standing balance, and is modified by sleep deprivation; however, how sleep deprivation affects vestibular-evoked balance responses is unknown. Thus, this study aimed to examine the effect of 24 h of sleep deprivation on the vestibular control of standing balance. During both a well-rested (i.e., control) and sleep deprivation condition, nine females completed two 90-s trials of bilateral, binaural stochastic electrical vestibular stimulation (EVS) and two 120-s trials of quiet stance on a force plate. Quiet stance performance was assessed by center of pressure displacement parameters. Mediolateral ground reaction force (ML force) and surface electromyography (EMG) of the right medial gastrocnemius (MG) were sampled simultaneously with the EVS signal to quantify vestibular control of balance within the frequency (gain and coherence) and time (cumulant density) domains. Twenty-four hours of sleep deprivation did not affect quiet stance performance. Sleep deprivation also had limited effect on EVS-MG EMG and EVS-ML Force coherence (less than control at 8-10.5 Hz, greater at ~ 16 Hz); however, gain of EVS-MG EMG (< 8, 11-24 Hz) and EVS-ML force (0.5-9 Hz) was greater for sleep deprivation than control. Sleep deprivation did not alter peak-to-peak amplitude of EVS-MG EMG (p = 0.51) or EVS-ML force (p = 0.06) cumulant density function responses. Despite no effect on quiet stance parameters, the observed increase in vestibular-evoked balance response gain suggests 24-h sleep deprivation may lead to greater sensitivity of the central nervous system when transforming vestibular-driven signals for standing balance control.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
Externí odkaz: