Encyclopedia of Clinical Neuropsychology

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

Anterior Communicating Artery

  • Bruce J. DiamondEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_2155


ACoA; Communicating artery


The anterior communicating artery (ACoA) interconnects the two anterior cerebral arteries just rostral to the optic chiasm and resides at the anterior portion of the Circle of Willis.

Ruptured ACoA aneurysms may impact a variety of neurologic, neuropsychological, and psychological functions. This may, in part, be due to the fact that the perforating branches of the ACoA supply the anterior hypothalamus, mesial anterior commissure, lamina termininalis, and areas implicated in executive function, memory, and affect (e.g., fornix and basal forebrain, septal nuclei, nucleus accumbens, diagonal band, and the medial substantia innominata) (DeLuca and Diamond 1995; Sawada and Kazui 1995). The profound memory disorders that can be associated with ACoA aneurysm rupture do not appear to directly involve neuroanatomic areas traditionally implicated in amnesia, which makes the ACoA artery of both clinical and theoretical interest.



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Authors and Affiliations

  1. 1.Department of PsychologyWilliam Paterson UniversityWayneUSA