The basal ganglia
Basal ganglia · nuclei basales
Clusters of deep brain cells that help start, smooth and stop your movements and habits.
What it does
The basal ganglia are groups of nerve cells buried deep in each hemisphere. They work in loops with the cortex and thalamus to select the movements you want and suppress the ones you don't. They also help form habits and are involved in reward and motivation.
Surprising fact
Parkinson's disease begins when cells that send dopamine to the basal ganglia die, which is why people with it struggle to start moving, even though their muscles are strong.
Why it matters
Habits like driving a familiar route on "autopilot" rely heavily on these circuits, freeing the rest of your brain to think about other things.
Nearby
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Sources
Drafted with AI help; awaiting a human fact-check against these sources.
Open in the 3D atlas · Suggest a correction · Not medical advice.
3D models: Z-Anatomy & BodyParts3D (CC BY-SA 4.0 / 2.1 JP). Card text CC BY 4.0.