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Focal Cognitive Syndromesa 

Focal Cognitive Syndromesa
Chapter:
Focal Cognitive Syndromesa
Author(s):

Richard J. Caselli

DOI:
10.1093/med/9780190214883.003.0023
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date: 23 October 2019

The neurologic results of cortical lesions reflect the structural properties of the affected region. Lesions affecting primary sensorimotor cortices result in primary sensorimotor deficits that are qualitatively all-or-nothing, such as blindness (hemianopia) and paralysis (hemiparesis). Quantitatively, though, the severity of the deficit depends on the extent of the lesion (so that a hemiparetic patient may not be completely paralyzed but simply weak). Lesions affecting modality-specific association regions result in conceptually more complex disorders that are confined to a single modality, such as nonfluent aphasia or prosopagnosia. This chapter reviews clinical cortical syndromes.

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