Acetylcholine demixes heterogeneous dopamine signals for learning and moving

• Nature Neuroscience (2026)
• https://www.nature.com/articles/s41593-026-02227-x

Why it seems relevant

• Dopamine signals may reflect both reward-prediction-error-like learning signals and movement-related signals.
• The paper argues that acetylcholine helps separate or demix these heterogeneous dopamine signals.
• Relevant for dopamine papers, reinforcement learning, and the learning-vs-movement distinction in striatal circuitry.