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  Effect of trait-vigilance on early visual processing areas during sustained visual attention

Bekhtereva, V., Sander, C., Forschack, N., Olbrich, S., Hegerl, U., & Müller, M. M. (2012). Effect of trait-vigilance on early visual processing areas during sustained visual attention. Poster presented at Psychologie und Gehirn 2012, Jena, Germany.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-A421-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-C029-0
Genre: Poster

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 Creators:
Bekhtereva, Valeria1, Author
Sander, Christian1, Author
Forschack, Norman1, 2, Author              
Olbrich, Sebastian1, Author
Hegerl, Ulrich1, Author
Müller, Matthias M.1, Author
Affiliations:
1Universität Leipzig, External Organizations, Leipzig, Germany, ou_452891              
2Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              

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 Abstract: Sustained visual attention in connection with EEG‐vigilance states have not yet been explicitly investigated. In the present study we examined the effect of vigilance on sustained attention in a rapid serial visual presentation (RSVP) task in 2 subject groups with labile and stable EEG‐vigilance regulation patterns. Coloured letter streams flickered at 7.5 Hz and elicited steady‐state visual evoked potential (SSVEP) as an electrophysiological measure of sustained attention in early visual areas. We found that subjects with labile vigilance regulation show 230 Postersitzung 4 significant amplitude increases of SSVEP in the second half of the experiment. According to the vigilance stage classification, a labile pattern demonstrates a rapid decline to lower vigilance stages (e.g. dominant theta and delta activity in EEG), whereas stable vigilance pattern can be characterized by dominant alpha activity during resting‐EEG. Taking that into account, we further investigated cortical sources of alpha and the externally driven 7.5 Hz steady‐state signal. We found practically identical cortical sources for alpha and the SSVEP in early visual areas in both groups. These results suggest that the increase in the steady‐state response in the labile subjects is likely to occur due to weaker competition between alpha (10 Hz) with the 7.5 Hz externally driven network.

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 Dates: 2012-06
 Publication Status: Not specified
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Title: Psychologie und Gehirn 2012
Place of Event: Jena, Germany
Start-/End Date: 2012-06-08 - 2012-06-10

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