Internal Capsule — Anatomy & Blood Supply

The internal capsule is a compact, V-shaped band of white matter that funnels almost the entire projection traffic between the cerebral cortex and the brainstem/spinal cord. Because dense, somatotopically arranged fibre tracts are squeezed into a tiny space here, even a small lacunar infarct produces a disproportionately large, classic clinical deficit — which is exactly why it is one of the highest-yield topics in N…