What Is Agnosia?
Reviewed: Dr. Gromatzky
7. Diagnosis
To diagnose agnosia, the patient must be verified that their sensation, intelligence, and language are intact. The individual must also only be experiencing only one modality of sensory deficit. When diagnosing agnosia, it is necessary to distinguish between associative and apperceptive agnosia through matching and copying tasks.
Those with apperceptive agnosia will not be able to match stimuli identical in appearance while those with associative agnosia will not be able to match different stimuli. In patients with pure alexia, copying and recognition tests have to be done. For the diagnosis of prosopagnosia, recognition of faces as part of the test will be required.
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