EEG alpha activity reflects attentional demands, and beta activity reflects emotional and cognitive processes. Ray, W. & Cole, H. Science, 228:750--752, May, 1985. abstract bibtex Two experiments were designed to examine the effects of attentional demands on the electroencephalogram during cognitive and emotional tasks. We found an interaction of task with hemisphere as well as more overall parietal alpha for tasks not requiring attention to the environment, such as mental arithmetic, than for those requiring such attention. Differential hemispheric activation for beta was found most strongly in the temporal areas for emotionally positive or negative tasks and in the parietal areas for cognitive tasks.
@article{ Ray_Cole85a,
author = {Ray, W.J. and Cole, H.W.},
title = {{{E}{E}{G} alpha activity reflects attentional demands, and beta
activity reflects emotional and cognitive processes}},
journal = {Science},
year = {1985},
volume = {228},
pages = {750--752},
month = {May},
abstract = {Two experiments were designed to examine the effects of attentional
demands on the electroencephalogram during cognitive and emotional
tasks. We found an interaction of task with hemisphere as well as
more overall parietal alpha for tasks not requiring attention to
the environment, such as mental arithmetic, than for those requiring
such attention. Differential hemispheric activation for beta was
found most strongly in the temporal areas for emotionally positive
or negative tasks and in the parietal areas for cognitive tasks.}
}
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