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  Evidence for modulation of EEG microstate sequence by vigilance level

Krylova, M., Alizadeh, S., Izyurov, I., Teckentrup, V., Chang, C., van der Meer, J., et al. (2021). Evidence for modulation of EEG microstate sequence by vigilance level. NeuroImage, 224: 117393, pp. 1-14. doi:10.1016/j.neuroimage.2020.117393.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-C436-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-3174-F
Genre: Journal Article

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Krylova, M, Author              
Alizadeh, S, Author              
Izyurov, I, Author
Teckentrup, V, Author
Chang, C, Author
van der Meer, J, Author
Erb, M, Author              
Kroemer, N, Author
Koenig, T, Author
Walter, M1, 2, Author              
Jamalabadi, H, Author              
Affiliations:
1Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
2Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              

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 Abstract: The momentary global functional state of the brain is reflected in its electric field configuration and cluster analytical approaches have consistently shown four configurations, referred to as EEG microstate classes A to D. Changes in microstate parameters are associated with a number of neuropsychiatric disorders, task performance, and mental state establishing their relevance for cognition. However, the common practice to use eye-closed resting state data to assess the temporal dynamics of microstate parameters might induce systematic confounds related to vigilance levels. Here, we studied the dynamics of microstate parameters in two independent data sets and showed that the parameters of microstates are strongly associated with vigilance level assessed both by EEG power analysis and fMRI global signal. We found that the duration and contribution of microstate class C, as well as transition probabilities towards microstate class C were positively associated with vigilance, whereas the sign was reversed for microstate classes A and B. Furthermore, in looking for the origins of the correspondence between microstates and vigilance level, we found Granger-causal effects of vigilance levels on microstate sequence parameters. Collectively, our findings suggest that duration and occurrence of microstates have a different origin and possibly reflect different physiological processes. Finally, our findings indicate the need for taking vigilance levels into consideration in resting-sate EEG investigations.

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 Dates: 2020-022020-092021-01
 Publication Status: Published in print
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Title: NeuroImage
Source Genre: Journal
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Publ. Info: Orlando, FL : Academic Press
Pages: - Volume / Issue: 224 Sequence Number: 117393 Start / End Page: 1 - 14 Identifier: ISSN: 1053-8119
CoNE: https://pure.mpg.de/cone/journals/resource/954922650166