A prominent fissure or groove on the surface of the brain; also called the 'central sulcus.' Also a proper name.
Named after Luigi Rolando, an Italian anatomist who described this brain feature in 1829. The anatomical term honors his detailed brain mapping work.
The 'Rolandic fissure' divides your brain into motor and sensory regions, and it's one of the most important landmarks in neurosurgery because surgeons must avoid it to prevent paralysis. Different people's brains have wildly different fissure patterns—your brain's geography is as unique as your fingerprint.
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