Internal capsule tracts

Case contributed by Craig Hacking
Diagnosis not applicable
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Anatomic locations of the various tracts within the internal capsule, including the motor homunculus in the posterior limb.

LN: lentiform nucleus

C: head of the caudate nucleus

Th: thalamus

Case Discussion

This diagram illustrates the anatomic locations of the various tracts within the internal capsule.

Note the motor homunculus of the corticospinal tract located in the anterior 2/3rds of the posterior limb and the head and neck fibres in the corticonuclear tract within the genu.

Attribution:

  • Axial MRI image from Frank Gaillard, rID:42777

  • illustration drawn by Craig Hacking

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