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Habit - PVS

RDoC Classification

Domain: Positive Valence Systems > Construct: Reward Learning

Description

Sequential, repetitive, motor, or cognitive behaviors elicited by external or internal triggers that, once initiated, can go to completion without constant conscious oversight. Habits can be adaptive by virtue of freeing up cognitive resources. Habit formation is a frequent consequence of reward learning, but its expression can become resistant to changes in outcome value. Related behaviors could be pathological expression of a process that under normal circumstances subserves adaptive goals.

Molecules

AcetylcholineCo-released neuromodular glutamateCREBdopamine and dopamine-related moleculesFosB

Cells

Dopaminergic neuronsmedium spiny neuronsSubstantia Nigra

Circuits

dorsal striatumMedial Prefrontal CortexSN/VTAVentral striatum

Behavior

Compulsive behaviorsRepetitive behaviorsStereotypic behaviors

Self-Report

Aberrant behaviors checklistMeasures of repetitive behaviors

Paradigms

Devaluation taskHabit Learning TaskHabit Task