What resolves this contention: Whether dopamine activity is dissociable from mo…

What resolves this contention: Whether dopamine activity is dissociable from motor variables or whether subpopulations of midbrain dopamine neurons primarily signal movement initiation. / Dopamine neurons encode reward prediction error and are unrelated to movement parameters. / Dopaminergic neurons signal the onset of spontaneous movement in a cell-type-selective manner, contradicting a pure RPE interpretation.