Dopamine and proximity in motivation and cognitive control
SourceCurrent Opinion in Behavioral Sciences, 22, (2018), pp. 28-34
Article / Letter to editor
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PI Group Motivational & Cognitive Control
Current Opinion in Behavioral Sciences
Subject170 000 Motivational & Cognitive Control; Radboudumc 13: Stress-related disorders DCMN: Donders Center for Medical Neuroscience
Cognitive control—the ability to override a salient or prepotent action to execute a more deliberate one—is required for flexible, goal-directed behavior, and yet it is subjectively costly: decision-makers avoid allocating control resources, even when doing so affords more valuable outcomes. Dopamine likely offsets effort costs just as it does for physical effort. And yet, dopamine can also promote impulsive action, undermining control. We propose a novel hypothesis that reconciles opposing effects of dopamine on cognitive control: during action selection, striatal dopamine biases benefits relative to costs, but does so preferentially for ‘proximal’ motor and cognitive actions. Considering the nature of instrumental affordances and their dynamics during action selection facilitates a parsimonious interpretation and conserved corticostriatal mechanisms across physical and cognitive domains.
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