Sangam: A Confluence of Knowledge Streams

Capacity-Speed Relationships in Prefrontal Cortex

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dc.contributor Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences
dc.contributor Gabrieli, John D. E.
dc.contributor Gabrieli, John D. E.
dc.creator Prabhakaran, Vivek
dc.creator Rypma, Bart
dc.creator Narayanan, Nandakumar S.
dc.creator Meier, Timothy B.
dc.creator Austin, Benjamin P.
dc.creator Nair, Veena A.
dc.creator Naing, Lin
dc.creator Thomas, Lisa E.
dc.creator Gabrieli, John D. E.
dc.date 2012-02-23T17:26:07Z
dc.date 2012-02-23T17:26:07Z
dc.date 2011-11
dc.date 2011-04
dc.date.accessioned 2023-03-01T18:08:11Z
dc.date.available 2023-03-01T18:08:11Z
dc.identifier 1932-6203
dc.identifier http://hdl.handle.net/1721.1/69166
dc.identifier Prabhakaran, Vivek et al. “Capacity-Speed Relationships in Prefrontal Cortex.” Ed. André Aleman. PLoS ONE 6.11 (2011): e27504. Web. 23 Feb. 2012.
dc.identifier https://orcid.org/0000-0003-1158-5692
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/278885
dc.description Working memory (WM) capacity and WM processing speed are simple cognitive measures that underlie human performance in complex processes such as reasoning and language comprehension. These cognitive measures have shown to be interrelated in behavioral studies, yet the neural mechanism behind this interdependence has not been elucidated. We have carried out two functional MRI studies to separately identify brain regions involved in capacity and speed. Experiment 1, using a block-design WM verbal task, identified increased WM capacity with increased activity in right prefrontal regions, and Experiment 2, using a single-trial WM verbal task, identified increased WM processing speed with increased activity in similar regions. Our results suggest that right prefrontal areas may be a common region interlinking these two cognitive measures. Moreover, an overlap analysis with regions associated with binding or chunking suggest that this strategic memory consolidation process may be the mechanism interlinking WM capacity and WM speed.
dc.description National Center for Research Resources (U.S.) (grant UL1RR025011)
dc.description National Institutes of Health (U.S.) (grant NIH RO1 DC05375)
dc.description Wallace H. Coulter Foundation
dc.description National Institute of Mental Health (U.S.) (Challenge Grant RC1MH090912-01)
dc.format application/pdf
dc.language en_US
dc.publisher Public Library of Science
dc.relation http://dx.doi.org/10.1371/journal.pone.0027504
dc.relation PLoS ONE
dc.rights Creative Commons Attribution
dc.rights http://creativecommons.org/licenses/by/2.5/
dc.source PLoS
dc.title Capacity-Speed Relationships in Prefrontal Cortex
dc.type Article
dc.type http://purl.org/eprint/type/JournalArticle


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