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, public lecture to or mental deterioration, but is unremarkably caused by exchange 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 obligated for projection in vision. (Gleitman, Fridlund & Reisberg 2001: 29¬) Neuropsychologists principally distinguish optic agnosias as either associative agnosias or apperceptive agnosias, harm created by Lissauer (1890). Associative agnosia, according to Lissauer, occurs when a person cannot take an object or face, but appears to mother fully operating(a) visual perception. Apperceptive agnosia is characterised by a longanimous with alter visual perception, and therefore they are futile to see objects or faces correctly, and so leads to a lack of recognition. (Farah 2004: 4)Thi s undertake will look for apperceptive and associative agnosias using human face studies, as well as defining other poor son 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 victimize due to a sharp blood pressure drop.

Whilst delivery and most mental abilities had not been damaged, he seemed unable to notice almost all visually presented objects. The patient, however, could identify the object by and by touching it, and could name geometrical forms such a s squares and circles. He was diagnosed with! associative visual agnosia, as while he could not identify a visual object, he was unflurried sure-footed of drawing them very well. He was able to recognise blue details in drawings, such as complex nonobjective patterns, ad how these patterns differed. His inability to recognise objects was caused by a lesion in the left hemisphere, on the surface 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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