RIM1αβ Are Required at the Corticostriatal Synapses for Habit Formation

Hidalgo discusses the study on the role of R1M1 alpha beta in corticostriatal synapses for habit formation. Control of instrumental actions relies on a dual system of goal-directed and habit strategies. Goal-directed actions involve anticipation of rewards and are therefore sensitive to changes in the value of the outcome. Habits, in contrast, are well learned actions driven by a stimulus without regard to the outcome. Through repetition and learning, goal-directed strategies gradually evolve into less flexible habits. This happens when the sensorimotor association becomes strong enough to overcome the expectancy of the outcome, allowing the brain to complete everyday actions with minimal effort.