期刊名称：Revue de Neuropsychologie Neurosciences Cognitives et Cliniques
印刷版ISSN：2101-6739
电子版ISSN：2102-6025
出版年度：2010
卷号：2
期号：1
页码：11-21
DOI：10.1684/nrp.2010.0057
出版社：John Libbey Eurotext
摘要：Figures See all figures Authors Éric Salmon , Martial Van der Linden , Rik Vandenberghe , Christian Degueldre , André Luxen , Fabienne Collette Cyclotron Research Center, Université de Liège, B30 Sart Tilman, 4000 Liège, Belgique, Département des sciences cognitives, Faculté de psychologie et des sciences de l’éducation, Université de Liège, Belgique, Unité de psychopathologie cognitive, Université de Genève, Suisse, Department of Neurology, University of Leuven, Belgique Key words: shifting, cueing, conditional association, brain imaging DOI : 10.1684/nrp.2010.0057 Page(s) : 11-21 Published in: 2010 We aimed to contrast cognitive subcomponents in three different shifting tasks combined in a single positron emission tomography study. The three tasks differed according to various aspects, such as their predictability and their (endogenous or exogenous) cueing. A conjunction analysis reproduced a previously reported common activation in the middle portion of the right intraparietal sulcus (IPS), related to attentional processes involved in many executive tasks. We then used simple subtractions/interaction analyses and plots of parameter estimates, looking for brain activation that could empirically be related to a specific cognitive subcomponent intervening in only two of the three tasks. Predictable cued shifting between stimuli for verbal categorization and unpredictable exogenously cued shifting between local and global features of Navon figures (but not the endogenously controlled arithmetic task) recruited the medial bank of the left IPS, involved when shifting between stimuli was conditional upon external cue-target association. The empirical study is consistent with hypothesis-driven reports and shows consistent neural correlate of a non-specific but useful cue-target association that intervenes in different shifting tasks.
