Subsecond changes of global brain state in illusory multistable motion perception

Müller, Th J; Koenig, Th; Wackermann, J; Kalus, P; Fallgatter, A; Strik, W; Lehmann, D (2005). Subsecond changes of global brain state in illusory multistable motion perception. Journal of neural transmission, 112(4), pp. 565-76. Wien: Springer 10.1007/s00702-004-0194-z

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This study explored transient changes in EEG microstates and spatial Omega complexity associated with changes in multistable perception. 21-channel EEG was recorded from 13 healthy subjects viewing an alternating dot pattern that induced illusory motion with ambiguous direction. Baseline epochs with stable motion direction were compared to epochs immediately preceding stimuli that were perceived with changed motion direction ('reference stimuli'). About 750 ms before reference stimuli, Omega complexity decreased as compared to baseline, and two of four classes of EEG microstates changed their probability of occurrence. About 300 ms before reference stimuli, Omega complexity increased and the previous deviations of EEG microstates were reversed. Given earlier results on Omega complexity and microstates, these sub-second EEG changes might parallel longer-lasting fluctuations in vigilance. Assumedly, the discontinuities of illusory motion thus occur during sub-second dips in arousal, and the following reconstruction of the illusion coincides with a state of relative over-arousal.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > University Psychiatric Services > University Hospital of Psychiatry and Psychotherapy > UPD Murtenstrasse
04 Faculty of Medicine > University Psychiatric Services > University Hospital of Psychiatry and Psychotherapy > Psychiatric Neurophysiology (discontinued)
04 Faculty of Medicine > University Psychiatric Services > University Hospital of Psychiatry and Psychotherapy > Management

UniBE Contributor:

Müller, Thomas Jörg; König, Thomas and Strik, Werner

ISSN:

0300-9564

Publisher:

Springer

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 15:24

Last Modified:

17 Mar 2015 22:52

Publisher DOI:

10.1007/s00702-004-0194-z

PubMed ID:

15340871

Web of Science ID:

000227905400009

URI:

https://boris.unibe.ch/id/eprint/37900 (FactScience: 214013)

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