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Séminaire impromptu - Youna VandaeleDisentangling neural correlates of habits and automaticity in the dorsal striatum

Abstract :


 The dorsomedial (DMS) and dorsolateral (DLS) striatum are necessary f
or goal-directed and habitual responding, respectively, but these regions also are implicated in skill learning and automaticity. Although both habit and automaticity develop with practice and require dorsal striatum integrity, the relation between these concepts and their specific striatal neural correlates remains unclear. To address this question, we obtained single-unit recordings in the rat DMS and DLS during acquisition and after overtraining in two distinct instrumental procedures, one which promotes habitual/automatic behavior, and a second that promotes goal-directed behavior. We find differences in DMS and DLS neural activity that depend on training, and that are in accordance with differences in expression of habit and behavioral automaticity.

Brief description
Dorsal striatum is at the crossroads of meso-cortico-striatal circuits and is critically involved in expression of habit and automaticity. Here, I will show differences in neural activity of dorsomedial and dorsolateral striatum that depend on training, and are in accordance with differences in expression of habit and behavioral automaticity.