Encyclopedia of Clinical Neuropsychology

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

Meyer’s Loop

  • John E. MendozaEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_751

Synonyms

Temporal optic radiations

Definition

The anterior, ventral portion of the optic radiations. Nerve fibers which exit the lateral geniculate nuclei project caudally to the primary visual cortex in the mesial portion of the occipital lobe. These fibers form a relatively broad band of white matter pathways known as the optic radiations. The ventral-most of this band of fibers loops slightly forward deep in the temporal lobe before continuing back to the lingual gyrus of the occipital cortex. This temporal deviation of the optic radiations is referred to as Meyer’s loop (see Fig. 1). Because these fibers essentially carry information originally derived from the ventral portion of the retina, lesions to this pathway will result in a contralateral superior quadrantanopsia.
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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