Imaging alpha signal modulation using an ICA-based EEG inverse approach

Lin Yang, Zhongming Liu, Cristina Rios, Bin He

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Dynamic behaviors of coordinated neural activities often manifest themselves as large-scale modulations of rhythmic electrophysiological signals. Although such modulations are sometimes observable in human electroencephalography (EEG), it remains technically challenging to pinpoint the neural origins of EEG rhythmic modulations. In the present study, we propose to use a novel ICA-based spatiotemporal source imaging approach to image the neural activities that give rise to the modulation of alpha-band EEG signals during an eye-open-eye-closed task. The results indicate that the alpha signal modulation, due to the alternation between two resting states (i.e. eye-open vs. eye-closed), originates primarily from extended regions within the occipital and parietal lobes.

Original languageEnglish (US)
Title of host publicationWorld Congress on Medical Physics and Biomedical Engineering
Subtitle of host publicationDiagnostic Imaging
Pages493-495
Number of pages3
Edition2
DOIs
StatePublished - Dec 1 2009
EventWorld Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging - Munich, Germany
Duration: Sep 7 2009Sep 12 2009

Publication series

NameIFMBE Proceedings
Number2
Volume25
ISSN (Print)1680-0737

Other

OtherWorld Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging
CountryGermany
CityMunich
Period9/7/099/12/09

Keywords

  • Alpha rhythmic modulation
  • EEG
  • Eye-open-eye-closed task
  • ICA

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