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719 Parkinson’s breakthrough changes what we know about dopamine

ScienceDaily
ScienceDaily · 12/22/2025 01:38 EDT

A new study shows dopamine isn’t the brain’s movement “gas pedal” after all. Instead of setting speed or strength, it quietly enables movement in the background, much like oil in an engine. When scientists manipulated dopamine during movement, nothing changed—but restoring baseline dopamine levels made a big difference. The finding could reshape how Parkinson’s disease is treated.

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