Dopamine explained through its three main functional outputs 1. Reward Prediction Error: Dopamine doesn't fire just from a reward; it fires when a reward is _unexpected_ or _better than expected_. This "prediction error" updates the brain's model of the world, reinforcing behaviors that lead to positive outcomes and driving habit formation. 2. Motivation: In the mesolimbic pathway, dopamine generates the craving or "drive" to pursue a target. This creates a state of "wanting" that is distinct from the actual hedonic enjoyment ("liking") of the reward once obtained. 3. Motor: In the nigrostriatal pathway, dopamine functions as the "accelerator" for voluntary movement. It facilitates the initiation of action; without it (as in Parkinson's disease), the body becomes rigid and slow. [^1][^2] [^1]: After Skool, dir. 2022. _How to Maximize Dopamine & Motivation - Andrew Huberman_. [https://www.youtube.com/watch?v=ha1ZbJIW1f8](https://www.youtube.com/watch?v=ha1ZbJIW1f8). [[afterskoolHowMaximizeDopamine2022|Annotations]] [^2]: Gemini Deep Research: https://gemini.google.com/share/78376cf851cb