Chapter

Anterior Commissure

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/9780195104233.003.0021
 Anterior Commissure

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This chapter begins with historical accounts of the anterior commissure (AC). It then discusses the results of the investigation of the AC of rhesus monkey brains. It shows that the AC traverses the midline as a compact and prominent fiber bundle located immediately in front of the anterior columns of the fornix, situated above the basal forebrain and beneath the medial and ventral aspect of the anterior limb of the internal capsule. In the hemisphere it moves caudally and passes laterally through the ventral aspect of the globus pallidus. It continues laterally beneath the putamen and descends lateral to the amygdala into the temporal stem. Further caudally, the AC is located lateral to the ventral aspect of the putamen and the tail of the caudate nucleus and medial to the ventral aspect of the claustrum.

Keywords: rhesus monkey brain; fibers; putamen; amygdale; claustrum

Chapter.  2772 words.  Illustrated.

Subjects: Neuroscience

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