Internal Capsule

Saturday, July 4, 2015

The internal capsule is a compact band of myalinated axons located in the center of the brain, separating the caudate nucleus from the lentiform nucleus (putamen and globus pallidus), which are two basal ganglia structures.

Function

The internal capsule connects the thalamus with areas of the cerebral cortex and vice versa, transmitting auditory, visual, and somatic sensory information. It is also a pathway, by which the cortex projects axonic fibers all the way down to the brainstem and spinal cord.

Coronal section of the brain showing the internal capsule and other anatomical structures (image from Gray's Anatomy)