Tim van Timmeren
@tvantimmeren.bsky.social
Assistant prof @UniUtrecht 🇳🇱. Interested in habits, (behavioral) addictions, smartphone/social media use, the brain, fMRI, Comp Psychiatry. He/him
/7 This challenges the notion of a neural habit system that puts limits on the capacity for flexible, goal-directed action. We suggest that it's variations in GD rather than habitual control that determine behavioral flexibility on these tasks in humans.
July 24, 2024 at 2:24 PM
/7 This challenges the notion of a neural habit system that puts limits on the capacity for flexible, goal-directed action. We suggest that it's variations in GD rather than habitual control that determine behavioral flexibility on these tasks in humans.
/6 However: small sample size (n=23). Our conceptual replication study in n=205 found indiv differences in task performance correlated positively (GD control) with striatum – dlPFC WM strength. However, no sign negative (habitual control) associations with WM strength.
July 24, 2024 at 2:23 PM
/6 However: small sample size (n=23). Our conceptual replication study in n=205 found indiv differences in task performance correlated positively (GD control) with striatum – dlPFC WM strength. However, no sign negative (habitual control) associations with WM strength.
/5 One early study www.jneurosci.org/content/32/3... used outcome-devaluation to measure goal-directed & habitual control combined with DTI in humans to find dissociable white-matter neural pathways supported goal-directed (caudate – vmPFC) and habitual (putamen – premotor cortex) control
Corticostriatal Connectivity Underlies Individual Differences in the Balance between Habitual and Goal-Directed Action Control
Why are some individuals more susceptible to the formation of inflexible habits than others? In the present study, we used diffusion tensor imaging to demonstrate that brain connectivity predicts indi...
www.jneurosci.org
July 24, 2024 at 2:23 PM
/5 One early study www.jneurosci.org/content/32/3... used outcome-devaluation to measure goal-directed & habitual control combined with DTI in humans to find dissociable white-matter neural pathways supported goal-directed (caudate – vmPFC) and habitual (putamen – premotor cortex) control
/4 The strongest evidence for two systems comes from lesioning studies in rodents, showing dissociable cortico-striatal pathways for goal-directed and habitual action (e.g. Balleine, 2019). But research in humans is limited.
July 24, 2024 at 2:23 PM
/4 The strongest evidence for two systems comes from lesioning studies in rodents, showing dissociable cortico-striatal pathways for goal-directed and habitual action (e.g. Balleine, 2019). But research in humans is limited.
/3 Many of our actions are repeated every day in the same context, making them highly prone to become habitual. Dual-process models suggest that actions depend on two systems: a flexible goal-directed system and a quick & efficient habit system.
July 24, 2024 at 2:23 PM
/3 Many of our actions are repeated every day in the same context, making them highly prone to become habitual. Dual-process models suggest that actions depend on two systems: a flexible goal-directed system and a quick & efficient habit system.
/2 Do habitual and goal-directed control depend on distinct cortico-striatal brain pathways? In a new study, we failed to provide converging evidence for the existence of a neural habit system that puts limits on the capacity for flexible, goal-directed action.
July 24, 2024 at 2:22 PM
/2 Do habitual and goal-directed control depend on distinct cortico-striatal brain pathways? In a new study, we failed to provide converging evidence for the existence of a neural habit system that puts limits on the capacity for flexible, goal-directed action.