Localization of hemiachromatopsia
| Autor: | N. R. Graff-Radford, R. A. Short |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Achromatopsia
genetic structures Color vision Color Vision Defects Electroencephalography Neuropsychological Tests Functional Laterality Arts and Humanities (miscellaneous) Functional neuroimaging Cortex (anatomy) medicine Humans Vision for perception and vision for action Aged medicine.diagnostic_test Cerebral Infarction medicine.disease Magnetic Resonance Imaging eye diseases Stroke medicine.anatomical_structure Visual cortex Cerebral cortex Female Neurology (clinical) Visual Fields Psychology Neuroscience psychological phenomena and processes Cognitive psychology |
| Zdroj: | Neurocase. 7(4) |
| ISSN: | 1355-4794 |
| Popis: | Impaired color perception with relative preservation of form vision (achromatopsia) caused by cerebral lesions was first described over a century ago. However, for many years some researchers questioned the existence of an area of cerebral cortex apart from the primary visual cortex specialized in color processing. The development of sophisticated structural and functional neuroimaging techniques has allowed verification of the cortical structures important in color perception. We describe a case of a patient with impaired color perception in one hemifield of vision (hemiachromatopsia) and compare the localization of the lesion with previous cases described in the literature. These cases show that lesions of the ventromedial occipital cortex can impair color perception and leave form vision intact. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|