BA4
Primary Motor Cortex
Precentral gyrus, anterior bank of the central sulcus
Agranular cortex with absent or rudimentary layer IV. Characterized by giant pyramidal (Betz) cells in layer Vb — the only cortical area defined by a single neuron type. Can be subdivided into area 4a (anterior) and 4p (posterior) based on receptor architecture. Low cell density with poor lamination compared to sensory areas.
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Articles from PubMed, filtered by relevance.