Theta power in the EEG of humans during ongoing processing in a haptic object recognition task.
Identifieur interne : 001D82 ( PubMed/Corpus ); précédent : 001D81; suivant : 001D83Theta power in the EEG of humans during ongoing processing in a haptic object recognition task.
Auteurs : M. Grunwald ; T. Weiss ; W. Krause ; L. Beyer ; R. Rost ; I. Gutberlet ; H J GertzSource :
- Brain research. Cognitive brain research [ 0926-6410 ] ; 2001.
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- KwdEn :
- MESH :
Abstract
Dynamic changes in spectral theta power (TP) in the EEG over frontal regions were reported previously during the processing of visually presented spatial and verbal tasks [Cereb. Cortex, 7 (1997) 374-385]. Lower TP was found at the beginning compared to the end of processing. In order to test another modality, we examined theta power during the exploration of haptic stimuli with different complexity. A linear correlation between theta power and mean exploration time (as a measure of stimulus complexity) was found at the end of exploration but not at its beginning. These data are in line with our hypothesis since one could expect minimal load of working memory independent of stimulus complexity at the beginning of exploration whereas working memory would have integrated the stimuli of differing complexity into a perceptual model at the end of exploration.
PubMed: 11240109
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pubmed:11240109Le document en format XML
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<author><name sortKey="Beyer, L" sort="Beyer, L" uniqKey="Beyer L" first="L" last="Beyer">L. Beyer</name>
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<front><div type="abstract" xml:lang="en">Dynamic changes in spectral theta power (TP) in the EEG over frontal regions were reported previously during the processing of visually presented spatial and verbal tasks [Cereb. Cortex, 7 (1997) 374-385]. Lower TP was found at the beginning compared to the end of processing. In order to test another modality, we examined theta power during the exploration of haptic stimuli with different complexity. A linear correlation between theta power and mean exploration time (as a measure of stimulus complexity) was found at the end of exploration but not at its beginning. These data are in line with our hypothesis since one could expect minimal load of working memory independent of stimulus complexity at the beginning of exploration whereas working memory would have integrated the stimuli of differing complexity into a perceptual model at the end of exploration.</div>
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<Abstract><AbstractText>Dynamic changes in spectral theta power (TP) in the EEG over frontal regions were reported previously during the processing of visually presented spatial and verbal tasks [Cereb. Cortex, 7 (1997) 374-385]. Lower TP was found at the beginning compared to the end of processing. In order to test another modality, we examined theta power during the exploration of haptic stimuli with different complexity. A linear correlation between theta power and mean exploration time (as a measure of stimulus complexity) was found at the end of exploration but not at its beginning. These data are in line with our hypothesis since one could expect minimal load of working memory independent of stimulus complexity at the beginning of exploration whereas working memory would have integrated the stimuli of differing complexity into a perceptual model at the end of exploration.</AbstractText>
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