Encyclopedia of Clinical Neuropsychology

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

Arcuate Fasciculus

  • Martin R. GrafEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_292

Definition

The arcuate fasciculus is a large bundle of nerve fibers that curves around the lateral sulcus to connect Broca’s area in the frontal cortex to Wernicke’s area located in the posterior portion of the temporal lobe. This white matter pathway is essential for language processing in which the arcuate fasciculus connects the region associated with the ability to produce spoken language, Broca’s area, to that of the ability to process spoken words that are heard which is associated with Wernicke’s area. This language loop is located in the left hemisphere in approximately 90% of the population. Lesions disrupting the arcuate fasciculus result in conduction aphasia, which is characterized by paraphasic errors in which incorrect words or sounds are substituted and word repetition is impaired, although these individuals generally show reasonably normal speech and comprehension.

Cross-References

References and Readings

  1. LaPointe, L. L. (2005). Aphasia and related neurogenic language disorders. New York: Thieme.Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of NeurosurgeryVirginia Commonwealth University Medical CenterRichmondUSA