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oai:www.ideals.illinois.edu:2142/42453 2023-07-11 col_2142_5131 col_2142_11614 com_2142_5130 com_2142_11613 com_2142_8903

Fabiani, Monica Gratton, Gabriele Baniqued, Pauline 2013-02-03T19:46:09Z 2013-02-03T19:46:09Z 2015-02-03T11:00:40Z 2012-12 2013-02-03T19:46:09Z 2012-12 Coordination between networks of brain regions is important for optimal cognitive performance, especially in attention demanding tasks. With the event-related optical signal (EROS; a measure of changes in optical scattering due to neuronal activity) we can characterize rapidly evolving network processes by examining the millisecond-scale temporal correlation of activity in distinct regions during the preparatory period of a response-mode switching task. Participants received a pre-cue indicating whether to respond vocally or manually. They then saw or heard the letter “L” or “R”, indicating a “left” or “right” response to be implemented with the appropriate response modality. We employed lagged cross-correlations to characterize the dynamic connectivity of preparatory processes. Our results confirmed coupling of frontal and parietal cortices, and the trial-dependent relationship of the right frontal cortex with response preparation areas. The frontal-to-modality-specific cortex cross-correlations revealed a pattern in which first irrelevant regions were deactivated and then relevant regions were activated. These results provide a window into the sub-second-scale network interactions that flexibly tune to task demands. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2012-12-01T17:00:56Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Baniqued_Pauline.pdf: 1261054 bytes, checksum: 0f2fa1f2d3217aeffe45f538bf4f0140 (MD5) Made available in DSpace on 2013-02-03T19:46:09Z (GMT). No. of bitstreams: 2 Pauline_Baniqued.pdf: 1366463 bytes, checksum: 63687252621e10783fb48026408c2d5b (MD5) license.txt: 4066 bytes, checksum: c908f5b58e02755f65c2676ca808b533 (MD5) Restriction data tranferred 2014-07-01T11:36:00-05:00 Original Data Group with Access Administrator Release Date: 2015-02-03 13:47:48 UTC Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system Item marked as restricted to the 'Administrator' Group (id=1) by Seth Robbins (srobbins@illinois.edu) on 2013-02-03T19:47:55Z Item is restricted until 2015-02-03T19:47:48Z Limited Restriction Lifted for Item 42401 on 2015-02-03T11:00:40Z. http://hdl.handle.net/2142/42453 en This work is a preprint version of an article that has been accepted for publication in the Journal of Cognitive Neuroscience: Baniqued, P.L., Low, K.A., Fabiani, M., Gratton, G. Frontoparietal traffic signals: A fast optical imaging study of preparatory dynamics in response-mode switching. frontoparietal network task switching response preparation executive control functional connectivity optical imaging event-related brain potentials A fast optical imaging study of frontoparietal preparatory dynamics in response-mode switching text Psychology 1299 Psychology 0338 University of Illinois at Urbana-Champaign Thesis M.A. PHD:Psychology -UIUC 10KS0338PHD