What resolves this contention: {'position': 'Dopamine neurons form a functional…

What resolves this contention: {'position': 'Dopamine neurons form a functionally homogeneous population encoding reward prediction error', 'supporting_dois': []} / {'position': 'Midbrain dopamine neurons are molecularly and functionally heterogeneous, with distinct subpopulations defined by transcriptomic markers, projection targets, and response properties', 'supporting_dois': []}