Toward scale-free like behavior under increasing cognitive load

Authors:
Mario Altamura;Brita Elvevåg;Gaetano Campi;Michela De Salvia;Daniele Marasco;Alessandro Ricci;Antonello Bellomo
Affiliations:
Department of Medical Sciences, Psychiatry Unit, University of Foggia, Foggia, Italy;Psychiatry Research Group, Department of Clinical Medicine, University of Tromsø, & Norwegian Centre for Integrated Care and Telemedicine (NST), University Hospital of North Norway, Troms&# ...;Institute of Crystallography, CNR, Via Salaria Km 29.300, Monterotondo, Roma 00015, Italy;Department of Medical Sciences, Psychiatry Unit, University of Foggia, Foggia, Italy;Department of Medical Sciences, Psychiatry Unit, University of Foggia, Foggia, Italy;Deutsches Elektronen-Synchrotron DESY, Notkestraβe 85, D-22607, Hamburg, Germany;Department of Medical Sciences, Psychiatry Unit, University of Foggia, Foggia, Italy
Venue:
Complexity
Year:
2012

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Abstract

To understand how cognition and response selection processes might emerge from dynamic brain systems, we analyzed reaction times during the performance of both a working memory task and a choice reaction time task at different levels of “cognitive load.” Our findings suggest a continuous transition—tuned by load—from random behavior toward scale-free like behavior as an expanding connectivity process in a network poised near a critical point. © 2012 Wiley Periodicals, Inc. Complexity, 2012 © 2012 Wiley Periodicals, Inc.