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

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

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