Peter D. Balsam

This study shows that temporal uncertainty during reward cue presentation increases sign-tracking behavior in mice, and this effect persists even after uncertainty is removed.

The paper tracks and manipulates striatal neuron activity during goal-directed learning and habit formation, finding D1+ neurons maintain stable action representations while A2A+ neurons show transient or slow reorganization.

This study shows that inhibiting the striatal indirect pathway during the second postnatal week in mice causes long-lasting deficits in motivated behavior and dopamine adaptation.

This study shows that increasing dopamine D2 receptors in nucleus accumbens cholinergic interneurons increases impulsive choice in mice, while reducing them decreases impulsive choice.

This study shows that dopamine D2 receptors in cholinergic interneurons modulate the pause in neuronal activity and impair inhibitory learning in a Go/No-Go task.

This study shows that serotonin 1B receptor deficiency increases impulsive action through enhanced reward valuation, as demonstrated in a mouse model.