Encyclopedia of Clinical Neuropsychology

Living Edition
| Editors: Jeffrey Kreutzer, John DeLuca, Bruce Caplan

Precentral Gyrus

Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-56782-2_354-2

Synonyms

Definition

Located in the frontal lobe of the cerebral cortex, the precentral gyrus is a vertically oriented, cerebral convolution located immediately anterior to, and running parallel with, the central sulcus. The precentral gyrus is the primary somatomotor motor cortex and sends efferent axons in the corticospinal tract to terminate on cranial and spinal motor neurons. The body is somatotopically represented on the gyrus in an inverted pattern with regions controlling the head located in the lower portions. Lesions in the precentral gyrus may result in weakness or paralysis in the corresponding region of the body.

Cross-References

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Anatomy and NeurobiologyVirginia Commonwealth UniversityRichmondUSA