Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Associational Fibers

  • Melissa J. McGinnEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_294

Synonyms

Arcuate fibers

Definition

Associational fibers are bundles of white matter that connect various cortical regions within the same cerebral hemisphere. The most prevalent type of white matter tract found in the cortex, associational fibers permit bidirectional communication between different cortical areas, thus allowing the cortex to function as a coordinated whole. Associational fibers predominantly arise from cortical layer III pyramidal neurons and can be classified as either short associational fibers, which connect adjacent gyri within the same lobe, or long associational fibers, interconnecting more distant regions located in different lobes. The major long associational fibers tracts in the brain include the superior longitudinal fasciculus, arcuate fasciculus, uncinate fasciculus, and cingulum.

Cross-References

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Anatomy and NeurobiologyVirginia Commonwealth University School of MedicineRichmondUSA