Agnosia Visual
Mostrando 13-18 de 18 artigos, teses e dissertações.
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13. Pure alexia and right hemiachromatopsia in posterior dementia.
A 66 year old, right handed woman presented with pure alexia and right hemiachromatopsia (PARH) in the context of a posterior dementia. PARH was accompanied by prosopagnosia, 2-D object agnosia, and environmental agnosia. Visual fields were normal to confrontation testing. The pathological anatomy of PARH involves circumscribed damage to the lingual and fusi
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14. Study of anosognosia.
Anosognosia (denial of weakness) and "anosognosic phenomena" (other abnormal attitudes to a weak limb) were studied in 100 acute hemiplegics. Both conditions were associated with lesions of either hemisphere. Apathy, visual field defect, and impaired picture identification were particularly prominent in anosognosia. A failure to integrate information from on
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15. Post-ictal Klüver-Bucy syndrome after temporal lobectomy.
In both animals and humans, Klüver-Bucy syndrome is produced by bilateral temporal lobectomy. It is characterised by hypersexuality, visual agnosia, strong oral tendencies, dietary changes, and hypermetamorphosis. Recurrent, postictal Klüver-Bucy syndrome occurred transiently after seizures in a female who had undergone unilateral temporal lobectomy. The p
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16. Seeing with Profoundly Deactivated Mid-level Visual Areas: Non-hierarchical Functioning in the Human Visual Cortex
A fundamental concept in visual processing is that activity in high-order object-category distinctive regions (e.g., lateral occipital complex, fusiform face area, middle temporal+) is dependent on bottom-up flow of activity in earlier retinotopic areas (V2, V3, V4) whose main input originates from primary visual cortex (V1). Thus, activity in down stream ar
Oxford University Press.
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17. Achromatopsia in the aura of migraine.
A 49 year old woman reported an attack of transient neurological dysfunction associated with unilateral headache. A prominent feature of the aura was a period of complete achromatopsia, so that the visual scene was experienced in monochrome. The episode developed to include features of prosopagnosia and spatial agnosia before resolving completely. Other epis
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18. Neurolinguistic analysis of the language abilities of a patient with a "double disconnection syndrome": a case of subangular alexia in the presence of mixed transcortical aphasia.
In contrast to the classic form of alexia without agraphia, subangular alexia results from a single lesion located deep in the white matter of the left parietal lobe. In the present report, a patient with subangular alexia and features of mixed transcortical aphasia is described. Neurolinguistic findings include: alexia without agraphia, paucity of spontaneo