Meeting Banner
Abstract #2287

Default Mode Network and Working Memory Network During an fMRI Working Memory Task: Differences and Correlations with Behavioral Performance

Marta Re1, 2, Tommaso Piccoli3, 4, Giancarlo Valente3, Vincent Van De Ven3, Alexander Sack3, Francesco Di Salle3, 5

1IRCCS Istituto Scientifico Eugenio Medea, Bosisio Parini, Lecco, Italy; 2Dipartimento di Bioingegneria, Politecnico di Milano, Milano, MI, Italy; 3Department of Cognitive Neuroscience, University of Maastricht, Maastricht, Limburg, Netherlands; 4Dipartimento di Biomedicina e Neuroscienze Cliniche, Universit degli Studi di Palermo, Palermo, PA, Italy; 5Dipartimento di Medicina e Chirurgia, Universit di Salerno, Baronissi, SA, Italy

Working memory (WM) load has effects on regional neural activation, but the mechanism through which its modulates brain connectivity is still unclear. Spatial independent component analysis (ICA) is a reliable technique to investigate the networks during an fMRI task. The aim of this work is to use the time course of the WM task involved networks (default mode network and working memory network), selected by means of ICA, for studying: a) how these networks are involved with the complexity of the task and the phase; b) how, in these networks, complexity and phase are correlated with reaction times.

Abstract PDF

Keywords

account achieved acquisition acquisitions activation activities activity advance amount anatomic becomes behavior behavioral behaviors better bold brain circles cognitive complex complexity component components concerning conducted connectivity considered consisted contrast coordinates corrected correction correlated correlation correlations course courses deactivation default defined delayed delaying describing difficulty divided encode events every examined exhibits experiment extracts fact field fifteen filter filtered findings fisher five focus functional grows handed head included independence independent inhomogeneities innovation interaction intra investigating involved involvement isolate isolated judge lacking last linear load loads maintenance maps marked memory minutes mnemonic mode motion network networks neural nowadays opposite paradigm part pass patterns performance preprocessing previous probably promising protocol rage reaction regarding regional relate related removal response retrieval runs scanner seems selected several smoothing spatial start still stimulus studies subject subjects subsequent substantially taking target task temporal thought totally transformed transversal trend trends trial trials unclear understanding variation view voyager window windows young zero