Visual agnosia and posterior cerebral artery infarcts: an anatomical-clinical study.

ABSTRACT:

Background

To evaluate systematically the cognitive deficits following posterior cerebral artery (PCA) strokes, especially agnosic visual disorders, and to study anatomical-clinical correlations.

Methods and findings

We investigated 31 patients at the chronic stage (mean duration of 29.1 months post infarct) with standardized cognitive tests. New experimental tests were used to assess visual impairments for words, faces, houses, and objects. Forty-one healthy subjects participated as controls. Brain lesions were normalized, combined, and related to occipitotemporal areas responsive to specific visual categories, including words (VWFA), faces (FFA and OFA), houses (PPA) and common objects (LOC). Lesions were located in the left hemisphere in 15 patients, in the right in 13, a

SUBMITTER: Martinaud O 

PROVIDER: S-EPMC3262828 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature