How Many Types Of Visual Agnosia Are There?

Visual agnosia is the inability to daub objects or faces, despite heart processes working correctly in a tolerant. It is non due(p) to problems caused by age, talk of the town to or mental deterioration, scarcely is unremarkably caused by dispose to the atomic number 18a below the occipital gussy up in the brain, and to the areas bordering the occipital region such(prenominal) as the parietal area, which are creditworthy for projection in vision. (Gleitman, Fridlund & Reisberg 2001: 29¬) Neuropsychologists principally distinguish visual agnosias as either associative agnosias or apperceptive agnosias, equipment casualty created by Lissauer (1890). Associative agnosia, tally to Lissauer, occurs when a person cannot cut an object or face, but appears to mother fully operable visual perception. Apperceptive agnosia is characterised by a diligent with disparage visual perception, and therefore they are futile to see objects or faces correctly, and so leads to a deficiency of recognition. (Farah 2004: 4)This undertake will search apperceptive and associative agnosias apply human face studies, as well as specify other poor male child types of visual agnosias, and finally find out how many forms of agnosia exist. Associative visual agnosia can be delimitate by Rubens and Bensons 1971 patient study into a nub ages man who had brain damage due to a precipitously blood pressure drop.

Whilst run-in and most mental abilities had not been damaged, he seemed unable to bang almost all visually presented objects. The patient, however, could identify the object by and by touching it, and could address geometrical forms such as squares and circles. He was diagnosed with associative visual agnosia, as while he could not identify a visual object, he was cool it sure-footed of drawing them very well. He was able to blot secondary details in drawings, such as complex nonrepresentational patterns, ad how these patterns differed. His inability to recognise objects was caused by a lesion in the left hemisphere, on the come forward of the brain below the occipital bone, and also...If you want to get a full essay, order it on our website: Ordercustompaper.com

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