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The arcuate fasciculus is a white-matter fiber tract that is involved in human language. Here we compared cortical connectivity in humans, chimpanzees and macaques (Macaca mulatta) and found a prominent temporal lobe projection of the human arcuate fasciculus that is much smaller or absent in nonhuman primates. This human specialization may be relevant to the evolution of language.

Original publication

DOI

10.1038/nn2072

Type

Journal article

Journal

Nat Neurosci

Publication Date

04/2008

Volume

11

Pages

426 - 428

Keywords

Anatomy, Comparative, Animals, Biological Evolution, Brain Mapping, Diffusion Magnetic Resonance Imaging, Frontal Lobe, Humans, Macaca mulatta, Nerve Fibers, Myelinated, Neural Pathways, Pan troglodytes, Temporal Lobe