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Kocharian, A., Redish, A.D. & Rothwell, P.E. Individual differences in decision-making shape how mesolimbic dopamine regulates choice confidence and change-of-mind. Nature Neuroscience (2025).

https://www.nature.com/articles/s41593-025-02015-z

One of many exciting results: When mice change their mind about a choice (quitting out of the wait zone on our #RestaurantRow task), there is a dip in dopamine, even though there is no new information provided. Creating such a dip with optogenetic inhibition increases the likelihood of quitting.

#neuroscience

Also available as a preprint on biorxiv. https://www.biorxiv.org/content/10.1101/2024.09.16.613237v1

Individual differences in decision-making shape how mesolimbic dopamine regulates choice confidence and change-of-mind - Nature Neuroscience

Differences in neuroeconomic decision-making influence nucleus accumbens dopamine dynamics and reflect choice confidence during evaluation, as well as past and future value during re-evaluation, which can causally lead to change-of-mind behaviors.

Nature

Answering a question from @Andrewpapale. https://fediscience.org/@Andrewpapale/114942272799323905

Yep! Dip in #dopamine happens at the moment of #regret, when the mouse realizes that it made a mistake of its own agency.

And looks different in mice that eventually learn to avoid the wait zone by deliberating in the offer zone (precommitment).

Andrew Papale (@[email protected])

@[email protected] dip during quitting consistent with internally genetated negative RPE?

FediScience.org