Application of ICA algorithm to EEG data from a visual attention experiment
-
1
Nencki Institute of Experimental Biology, Poland
-
2
Warsaw School of Social Psychology, Poland
Scarce observations in human EEG studies indicated that enhanced beta activity which accompany certain experimental tasks may be used as an arousal index. In our cat studies (Wróbel et al. 2007) we have found that local field potential oscillations in beta band (12-29 Hz) might serve as a carrier for attentional activation within the visual system. Here we have adopted our animal model of shifting anticipatory attention demands between visual and auditory modalities to study alertness related changes of beta activity in human subjects. The ICA algorithm was applied to each participant’s data and the whole analysis resulted with 11 components, which were later clustered among all subjects using k-means method. Results indicated increased alertness manifested by faster response to target stimuli in visual trials is accompanied by higher EEG activation in beta band in cluster with maximal amplitude in occipito-parietal sites. The shorter reaction time the amplitude of beta power appeared to be higher (this relation was most pronounced at lower beta power). This finding supports our hypothesis that beta band might serve as carrier for attentional activation within the visual system. This experiment proved also the usefulness of ICA algorithm application to EEG data, even with limited number (11) of channels.
References
1. Wróbel, A., Ghazaryan, A., Bekisz, M., Bogdan, W. i Kamiński, J. (2007). Two Streams of Attention-Dependent beta activity in the Striate Recipient Zone of Cat`s Lateral Posterior-Pulvinar Complex. Journal of Neuroscience 27(9), 2230-2240.
Conference:
Bernstein Symposium 2008, Munich, Germany, 8 Oct - 10 Oct, 2008.
Presentation Type:
Poster Presentation
Topic:
All Abstracts
Citation:
Kaminski
J,
Gola
M,
Brzezicka
A and
Wróbel
A
(2008). Application of ICA algorithm to EEG data from a visual attention experiment.
Front. Comput. Neurosci.
Conference Abstract:
Bernstein Symposium 2008.
doi: 10.3389/conf.neuro.10.2008.01.069
Copyright:
The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers.
They are made available through the Frontiers publishing platform as a service to conference organizers and presenters.
The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated.
Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed.
For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions.
Received:
17 Nov 2008;
Published Online:
17 Nov 2008.
*
Correspondence:
Jan Kaminski, Nencki Institute of Experimental Biology, Warsaw, Poland, j.kaminski@nencki.gov.pl