I think it’s very reasonable to say there’s huge amounts of evidence for prediction error correlates in DA, particularly later/after learning. Functional accounts are more conflicting, however

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I get the feeling the cholinergic system is somewhat more focused, at least in our hands, if that helps? 😆

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We have recently been recording some dopamine signals in DMS, and frankly, I am more confused than ever as to what dopamine is doing there. But that's the crux of it, really: it's doing so many different things, over different timescales and in different regions, so nothing quite captures it all.

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There's an intriguing suggestion that climbing fibers in the mouse cerebellum encode TD errors (as dopamine neurons are thought to), although climbing fibers are typically thought to encode Rescorla- Wagner prediction errors.

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but I should also specify that I try not to use "DA prediction errors," so as to not propagate sloppy usage (and thinking?) about functions of DA and, indeed, the neural implementation of constructs from RL

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