Chapter

Uncinate Fasciculus

Jeremy D. Schmahmann and Deepak N. Pandya

in Fiber Pathways of the Brain

Published in print April 2006 | ISBN: 9780195104233
Published online May 2009 | e-ISBN: 9780199864294 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780195104233.003.0016
 Uncinate Fasciculus

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This chapter discusses the results of the investigation of the uncinate fasciculus (UF) of rhesus monkey brains. It shows that the UF is a bidirectional pathway that preferentially links the anterior temporal lobe with the medial and orbital prefrontal cortex. Fibers from the rostral part of the superior temporal gyrus (temporal proisocortex and area TS1) and the inferotemporal region (areas TE1 and TEa) ascend in the temporal stem, where they are positioned rostral to the most anteriorly situated fibers of the inferior longitudinal fasciculus. The uncinate fibers then aggregate lateral to the ventral part of the claustrum, situated medial to the insular cortex, and below and medial to the fibers of the extreme capsule. They then move medially through the limen insula into the white matter of the orbital cortex.

Keywords: rhesus monkey brains; uncinate fibers; fibers; superior temporal gyrus; inferotemporal region; inferior longitudinal fasciculus

Chapter.  3170 words.  Illustrated.

Subjects: Neuroscience

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