Poster Session F, Tuesday, March 26, 8:00 – 10:00 am, Pacific Concourse
Inhibitory control training induces cortical thickness changes linked to global/local visual abilities in children
Nicolas Poirel1,2, Arnaud Cachia1,2, Marine Moyon1, Lisa Delalande1, Valérie Datin-Dorrière1, Katell Mevel1, Grégory Simon3, François Orliac1, Bernard Guillois4, Olivier Houdé1,2, Grégoire Borst1,2; 1LaPsyDÉ, UMR 8240, CNRS, Université Paris Descartes, Université de Caen Normandie, France, 2Institut Universitaire de France (IUF), Paris, 3ISTS, UMR 6301, CNRS, CEA, Caen, France, 4LPCN, Université de Caen Normandie, France
Visual environments are composed of global shapes and local details that compete for attentional resources. Children, who present a weaker bias toward global visual information than adults, have to inhibit the local information to correctly consider global information, and vice-versa. The present work used for the first time a longitudinal design to test the effect of an inhibitory control training on cortical thickness changes linked to global/local abilities in ten years-old children. Participants were randomly assigned to an inhibitory control (stroop/stop-signal tasks) or a control (knowledge based task) training group. In the pre- and post-training sessions, children performed a classic global/local visual task and a 3-Tesla MRI session. Performances during global/local visual task improved more in the inhibitory control group than in the control group. Moreover, in comparison to the control group, better abilities to deal with interference from local information after inhibitory control training was associated with changes in cortical thickness in prefrontal regions (insula, inferior, middle and orbital). On the other hand, inhibitory training group presented better abilities to deal with interference from global information associated with thickness changes in postcentral, superior temporal and occipital regions. Altogether, the present study is the first to evidenced the beneficial impact of inhibitory control training on both behavioral and neural levels for visuo-spatial abilities in children, with a posterior neural plasticity linked to the ability to deal with conflicting global information, and an anterior neural plasticity linked to the ability to deal with conflicting local visual information.
Topic Area: ATTENTION: Spatial