How Many Types Of Visual Agnosia Are There?

Visual agnosia is the inability to blemish objects or faces, despite optic processes working correctly in a tolerant. It is non due(p) to problems caused by age, talking to or mental deterioration, but is unremarkably caused by veer to the area below the occipital gussy up in the brain, and to the areas bordering the occipital region such as the parietal area, which are liable for projection in vision. (Gleitman, Fridlund & Reisberg 2001: 29¬) Neuropsychologists principally distinguish opthalmic agnosias as either associative agnosias or apperceptive agnosias, terms created by Lissauer (1890). Associative agnosia, according to Lissauer, occurs when a person cannot know an object or face, but appears to mother fully operative optic perception. Apperceptive agnosia is characterised by a longanimous with disgraced visual perception, and therefore they are futile to see objects or faces correctly, and so leads to a lack of recognition. (Farah 2004: 4)This undertake will search apperceptive and associative agnosias using human face studies, as well as defining other poor male child types of visual agnosias, and finally determining how many forms of agnosia exist. Associative visual agnosia can be defined by Rubens and Bensons 1971 patient study into a middle ages man who had brain misemploy due to a sharp blood pressure drop. Whilst terminology and most mental abilities had not been damaged, he seemed unable to fill in almost all visually presented objects. The patient, however, could identify the object by and by touching it, and could name 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 nonetheless sure-footed of drawing them very well. He was able to recognise pocket-size details in drawings, such as complex nonrepresentational patterns, ad how these patterns differed. His inability to recognise objects was caused by a les ion in the left hemisphere, on the surface o! f the brain below the occipital bone, and also...If you want to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper