Learning to play the violin involves adjustments based on feedback and the same cocktail of neurotransmitters (acetylcholine, norepinephrine, serotonin, dopamine) as positive and negative learning experiences.

“Maybe it's 100, but it's not every second matters. Some small fraction. And what we discovered is by triggering this release we're using the same way biology always works, it's how you learn to play a violin I made a squeaky note. I go, "Something there was wrong. I need to make an adjustment. " And what's weird is it's the same cocktail when it's a good thing or a bad thing. Acetylcholine, norepinephrine, serotonin, dopamine, of course, changes negatively when it's bad, and positively when it's good.”