Shifts in broadband power and alpha peak frequency observed during long‑term isolation

Jan Weber; Timo Klein; Vera Abeln

doi:10.1038/s41598-020-75127-0

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Shifts in broadband power and alpha peak frequency observed during long‑term isolation

Journal article

Open access

Peer reviewed

Shifts in broadband power and alpha peak frequency observed during long‑term isolation

Jan Weber, Timo Klein and Vera Abeln

Scientific Reports, Vol.10, pp.1-14

2020

DOI: https://doi.org/10.1038/s41598-020-75127-0

PMCID: PMC7581825

PMID: 33093553

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Abstract

Prolonged periods of social isolation and spatial confinement do not only represent an issue that needs to be faced by a few astronauts during space missions, but can affect all of us as recently shown during pandemic situations. The fundamental question, how the brain adapts to periods of sensory deprivation and re-adapts to normality, has only received little attention. Here, we use eyes closed and eyes open resting-state electroencephalographic (EEG) recordings to investigate how neural activity is altered during 120 days of isolation in a spatially confined, space-analogue environment. After disentangling oscillatory patterns from 1/f activity, we show that isolation leads to a reduction in broadband power and a flattening of the 1/f spectral slope. Beyond that, we observed a reduction in alpha peak frequency during isolation, but did not find strong evidence for isolation-induced changes that are of oscillatory nature. Critically, all effects reversed upon release from isolation. These findings suggest that isolation and concomitant sensory deprivation lead to an enhanced cortical deactivation which might be explained by a reduction in the mean neuronal population firing rate.

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Title: Shifts in broadband power and alpha peak frequency observed during long‑term isolation
Authors: Jan Weber (Author) - Eberhard-Karls-Universität Tübingen
Timo Klein (Author) - University of the Sunshine Coast, Queensland, School of Health and Sport Sciences - Legacy
Vera Abeln (Author) - German Sport University Cologne
Publication details: Scientific Reports, Vol.10, pp.1-14
Publisher: Nature Publishing Group
Date published: 2020
DOI: 10.1038/s41598-020-75127-0
ISSN: 2045-2322
PMID: 33093553; PMC7581825
Copyright note: Copyright (c) 2020 The Authors. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons .org/licenses/by/4.0/.
Organisation Unit: University of the Sunshine Coast, Queensland; School of Health and Sport Sciences - Legacy
Language: English
Record Identifier: 99482286102621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Neurosciences

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