Transcription of Agnosia A - ACNR
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Agnosia A - ACNR
18 IACNR VOLUME 4 NUMBER 5 NOVEMBER/DECEMBER 2004 AgnosiaAgnosia is a perceptual disorder in which sensationis preserved but the ability to recognise a stimulusor know its meaning is lost. Agnosia means with-out knowledge . Patients with Agnosia cannot under-stand or recognise what they see, hear or feel. Agnosiaresults from lesions that disconnect and isolate visual,auditory and somatosensory input from higher level pro-cessing. Perceptual skills have a hierarchical and nature and severity of perceptualimpairment depends upon modality affected and thelevel at which sensory processing has been is rare in its pure form. Less than one percent of allneurological patients have assessingagnosia, it is important to establish that sensation is pre-served; the patient is alert, intelligence is intact (or nearintact) with no language or memory involves assessing what the patient sees,hears or feels when presented with objects, pictures orsounds using a combination of clinical procedures andneuropsychological (1890) made a distinction between a deficit inthe ability to perceive stimuli consciously and a deficitreflecting an inability to ascribe meaning to what is per-ceived, a disorder he referred to as Seelenblindheit, or soulblindness.
18 I ACNR • VOLUME 4 NUMBER 5 • NOVEMBER/DECEMBER 2004 Agnosia A gnosia is a perceptual disorder in which sensation is preserved but the ability to recognise a …
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