Default mode network connectivity during task execution

作者: D. Vatansever , D.K. Menon , A.E. Manktelow , B.J. Sahakian , E.A. Stamatakis

DOI: 10.1016/J.NEUROIMAGE.2015.07.053

关键词:

摘要: Initially described as task-induced deactivations during goal-directed paradigms of high attentional load, the unresolved functionality default mode regions has long been assumed to interfere with task performance. However, recent evidence suggests a potential network involvement in fulfilling cognitive demands. We tested this hypothesis finger opposition paradigm and fixation periods which we compared an independent resting state scan using functional magnetic resonance imaging comprehensive analysis pipeline including activation, connectivity, behavioural graph theoretical assessments. The results indicate specific changes topography. Behaviourally, show that increased connectivity posterior cingulate cortex left superior frontal gyrus predicts faster reaction times. Moreover, interactive dynamic reconfiguration regions' connections illustrates their at hand higher-level global parallel processing power, yet preserved small-world architecture comparison rest. These findings demonstrate does not disengage paradigm, but instead may be involved relevant processing.

参考文章(63)
M. D. Fox, A. Z. Snyder, J. L. Vincent, M. Corbetta, D. C. Van Essen, M. E. Raichle, The human brain is intrinsically organized into dynamic, anticorrelated functional networks Proceedings of the National Academy of Sciences of the United States of America. ,vol. 102, pp. 9673- 9678 ,(2005) , 10.1073/PNAS.0504136102
Mohammad R. Arbabshirani, Martin Havlicek, Kent A. Kiehl, Godfrey D. Pearlson, Vince D. Calhoun, Functional network connectivity during rest and task conditions: a comparative study. Human Brain Mapping. ,vol. 34, pp. 2959- 2971 ,(2013) , 10.1002/HBM.22118
Damien A. Fair, Bradley L. Schlaggar, Alexander L. Cohen, Francis M. Miezin, Nico U.F. Dosenbach, Kristin K. Wenger, Michael D. Fox, Abraham Z. Snyder, Marcus E. Raichle, Steven E. Petersen, A method for using blocked and event-related fMRI data to study “resting state” functional connectivity NeuroImage. ,vol. 35, pp. 396- 405 ,(2007) , 10.1016/J.NEUROIMAGE.2006.11.051
Gordon L. Shulman, Julie A. Fiez, Maurizio Corbetta, Randy L. Buckner, Francis M. Miezin, Marcus E. Raichle, Steven E. Petersen, Common Blood Flow Changes across Visual Tasks: II. Decreases in Cerebral Cortex Journal of Cognitive Neuroscience. ,vol. 9, pp. 648- 663 ,(1997) , 10.1162/JOCN.1997.9.5.648
B Mazoyer, L Zago, E Mellet, S Bricogne, O Etard, O Houdé, F Crivello, M Joliot, L Petit, N Tzourio-Mazoyer, Cortical networks for working memory and executive functions sustain the conscious resting state in man Brain Research Bulletin. ,vol. 54, pp. 287- 298 ,(2001) , 10.1016/S0361-9230(00)00437-8
J. R. Binder, J. A. Frost, T. A. Hammeke, P. S. F. Bellgowan, S. M. Rao, R. W. Cox, Conceptual Processing during the Conscious Resting State: A Functional MRI Study Journal of Cognitive Neuroscience. ,vol. 11, pp. 80- 93 ,(1999) , 10.1162/089892999563265
Andrei Irimia, Micah C. Chambers, Carinna M. Torgerson, John D. Van Horn, Circular representation of human cortical networks for subject and population-level connectomic visualization NeuroImage. ,vol. 60, pp. 1340- 1351 ,(2012) , 10.1016/J.NEUROIMAGE.2012.01.107
Susan Whitfield-Gabrieli, Alfonso Nieto-Castanon, Conn: A Functional Connectivity Toolbox for Correlated and Anticorrelated Brain Networks Brain connectivity. ,vol. 2, pp. 125- 141 ,(2012) , 10.1089/BRAIN.2012.0073