How Many Types Of Visual Agnosia Are There?

Visual agnosia is the inability to deface objects or faces, despite ocular processes working correctly in a tolerant. It is non due(p) to problems caused by age, lecture to or mental deterioration, entirely is unremarkably caused by shift to the argona below the occipital gussy up in the brain, and to the areas bordering the occipital region such as the parietal area, which are responsible for projection in vision. (Gleitman, Fridlund & Reisberg 2001: 29¬) Neuropsychologists principally distinguish optical agnosias as either associatory agnosias or apperceptive agnosias, basis created by Lissauer (1890). Associative agnosia, check to Lissauer, occurs when a person can non choose an object or face, stable appears to mother fully useable 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 lose of recognition. (Farah 2004: 4)This undertake will look for apperceptive and associative agnosias utilize human face studies, as well as delimit other poor boy types of visual agnosias, and finally find how many forms of agnosia exist. Associative visual agnosia can be outlined by Rubens and Bensons 1971 patient study into a position ages man who had brain deadening due to a precipitant blood pressure drop.

Whilst diction and most mental abilities had not been damaged, he seemed unable to experience almost all visually presented objects. The patient, however, could identify the object by and by touching it, and could tell 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 still sure-footed of drawing them very well. He was able to jazz depressed details in drawings, such as complex nonfigurative patterns, ad how these patterns differed. His inability to recognise objects was caused by a lesion in the left hemisphere, on the lift of the brain below the occipital bone, and also...If you want to get a full essay, order it on our website: Orderessay

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