Dissociable norepinephrine and dopamine representations during strategic decision-making and reward learning

Norepinephrine activity in mice playing matching pennies reflects longer-timescale strategy and predicted choice switches, with rewarded-switch enhancement that cannot be explained by reward prediction error.

• Why it matters: Strategic choice in competitive settings requires learning from immediate outcomes while tracking slower context to stay unpredictable, but NE versus dopamine roles across timescales are unclear.
• What they did: Mice performed matching pennies against a computer opponent and a two-armed bandit task while fibre photometry, behavioural/neural modelling, and a within-subject multi-task design quantified NE and dopamine signals.
• The result: Dopamine tracked trial-by-trial reward outcomes and model-derived RPE across tasks, while pre-choice NE improved reinforcement-learning model prediction in matching pennies but not in the 2AB task.

AI summary of the abstract · may contain errors · not medical advice · read the paper.