Encyclopedia of Clinical Neuropsychology

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

Auditory Cortex

  • John E. MendozaEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_710

Definition

That portion of the cerebral cortex devoted exclusively to the processing of input from the medial geniculate nuclei (auditory information).

Current Knowledge

Located in the superior portion of the temporal lobe of each hemisphere, the auditory cortex consists of both primary (idiotypic) and secondary (unimodal homotypic) cortices. The former is located in the temporal operculum (Brodmann’s area 41 and part of 42) and is referred to as Heschl’s gyrus. The primary auditory cortex receives direct input from the medial geniculate nuclei of the thalamus, which it is thought to process auditory input at a very basic level with little, if any, distinction between the right and left hemispheres. The secondary auditory cortex (primarily Brodmann’s area 22) surrounds the primary cortex and, for the most part, is located in the lateral portion of the superior temporal gyrus. The posterior portion of this secondary cortex in the left hemisphere constitutes Wernicke’s area. These...

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Psychiatry and NeuroscienceTulane Medical School and SE Louisiana Veterans Healthcare SystemNew OrleansUSA