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Prefrontal Cortex Modulation during Anticipation of Working Memory Demands as Revealed by Magnetoencephalography
Joint Authors
Carver, Frederick W.
Coppola, Richard
Holroyd, Tom
Altamura, Mario
Elvevåg, Brita
Goldberg, Terry E.
Weinberger, Daniel R.
Source
International Journal of Biomedical Imaging
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-06-28
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
During the anticipation of task demands frontal control is involved in the assembly of stimulus-response mappings based on current goals.
It is not clear whether prefrontal modulations occur in higher-order cortical regions, likely reflecting cognitive anticipation processes.
The goal of this paper was to investigate prefrontal modulation during anticipation of upcoming working memory demands as revealed by magnetoencephalography (MEG).
Twenty healthy volunteers underwent MEG while they performed a variation of the Sternberg Working Memory (WM) task.
Beta band (14–30 Hz) SAM (Synthetic Aperture Magnetometry) analysis was performed.
During the preparatory periods there was an increase in beta power (event-related synchronization) in dorsolateral prefrontal cortex (DLPFC) bilaterally, left inferior prefrontal gyrus, left parietal, and temporal areas.
Our results provide support for the hypothesis that, during preparatory states, the prefrontal cortex is important for biasing higher order brain regions that are going to be engaged in the upcoming task.
American Psychological Association (APA)
Altamura, Mario& Goldberg, Terry E.& Elvevåg, Brita& Holroyd, Tom& Carver, Frederick W.& Weinberger, Daniel R.…[et al.]. 2010. Prefrontal Cortex Modulation during Anticipation of Working Memory Demands as Revealed by Magnetoencephalography. International Journal of Biomedical Imaging،Vol. 2010, no. 2010, pp.1-10.
https://search.emarefa.net/detail/BIM-502388
Modern Language Association (MLA)
Altamura, Mario…[et al.]. Prefrontal Cortex Modulation during Anticipation of Working Memory Demands as Revealed by Magnetoencephalography. International Journal of Biomedical Imaging No. 2010 (2010), pp.1-10.
https://search.emarefa.net/detail/BIM-502388
American Medical Association (AMA)
Altamura, Mario& Goldberg, Terry E.& Elvevåg, Brita& Holroyd, Tom& Carver, Frederick W.& Weinberger, Daniel R.…[et al.]. Prefrontal Cortex Modulation during Anticipation of Working Memory Demands as Revealed by Magnetoencephalography. International Journal of Biomedical Imaging. 2010. Vol. 2010, no. 2010, pp.1-10.
https://search.emarefa.net/detail/BIM-502388
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-502388