Extreme capsule

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Brain: Extreme capsule
Telencephalon-Horiconatal.jpg
Latin capsula extrema
NeuroNames hier-236
NeuroLex ID nlx_21887

The extreme capsule is a long association fiber pathway of white matter in the brain that provides bidirectional communication between such areas as the claustrum and the insular cortex, and the inferior frontal gyrus (Broca’s area) and the middle-posterior portion of the superior temporal gyrus (Wernicke's area).1 Its fibers are near to but can be distinguished by MRI tractography from adjacent fiber bundles such as the uncinate fasciculus, the external capsule, the arcuate fascicle, and the medial, inferior and superior longitudinal fascicles.1

Given its bidirectional connection between the Broca's and Wernicke's speech areas it could have a role in language.1

It is most easily visible in a horizontal section, just lateral to the claustrum.

Additional Images

References

  1. ^ a b c Makris N, Pandya DN (February 2009). "The extreme capsule in humans and rethinking of the language circuitry". Brain Struct Funct 213 (3): 343–58. doi:10.1007/s00429-008-0199-8. PMID 19104833. 

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