Task-Related Modulation of Anterior Theta and Posterior Alpha EEG Reflects Top-Down Preparation

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Task-Related Modulation of Anterior Theta and Posterior Alpha EEG Reflects Top-Down Preparation

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dc.contributor.author Park, Hae-Jeong
dc.contributor.author Min, Byoung-Kyong
dc.date.accessioned 2011-04-27T00:46:49Z
dc.date.issued 2010
dc.identifier.citation Min, Byoung-Kyong, and Hae-Jeong Park. 2010. Task-related modulation of anterior theta and posterior alpha EEG reflects top-down preparation. BMC Neuroscience 11: 79. en_US
dc.identifier.issn 1471-2202 en_US
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:4878057
dc.description.abstract Background: Prestimulus EEG alpha activity in humans has been considered to reflect ongoing top-down preparation for the performance of subsequent tasks. Since theta oscillations may be related to poststimulus top-down processing, we investigated whether prestimulus EEG theta activity also reflects top-down cognitive preparation for a stimulus. Results: We recorded EEG data from 15 healthy controls performing a color and shape discrimination task, and used the wavelet transformation to investigate the time course and power of oscillatory activity in the signals. We observed a relationship between both anterior theta and posterior alpha power in the prestimulus period and the type of subsequent task. Conclusions: Since task-differences were reflected in both theta and alpha activities prior to stimulus onset, both prestimulus theta (particularly around the anterior region) and prestimulus alpha (particularly around the posterior region) activities may reflect prestimulus top-down preparation for the performance of subsequent tasks. en_US
dc.language.iso en_US en_US
dc.publisher BioMed Central en_US
dc.relation.isversionof doi:10.1186/1471-2202-11-79 en_US
dc.relation.hasversion http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2906487/pdf/ en_US
dash.license LAA
dc.title Task-Related Modulation of Anterior Theta and Posterior Alpha EEG Reflects Top-Down Preparation en_US
dc.type Journal Article en_US
dc.description.version Version of Record en_US
dc.relation.journal BMC Neuroscience en_US
dash.depositing.author Min, Byoung-Kyong
dc.date.available 2011-04-27T00:46:49Z
dash.affiliation.other HMS^Radiology-Brigham and Women's Hospital en_US

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