The Japanese journal of neuropsychology

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ArticleTitle	The degree of visual ability necessary to recognize objects
Language	J
AuthorList	Hideko Mizuta
Affiliation	Department of Rehabilitation, Fujiikai Rehabilitation Hospital
Publication	Japanese Journal of Neuropsychology: 24 (3), 211-220, 2008
Received
Accepted
Abstract	A case presenting progressive visual agnosia was reported. The case was a 55-year-old man at the initial diagnosis. In the first stage, difficulties with driving at night and writing were revealed and after about 10 years he developed cortical blindness. The ability of reading was comparatively kept to the last stage. The features of agnosia in this case were the recognition of objects which were already known was good, contrarily meaningless could not be recognized. From various examinations, even though his disease of the optic system gradually progressed, we suspected that his visual mental representations were well preserved, and that for known objects recognition was possible from a top-down approach from his preserved visual representations. There have been no reports until now, and symptoms of various visual agnosia appear to be found in cases which suggest the disease state of integrative agnosia.
Keywords	visual agnosia, integrative agnosia, appercetive agnosia, visual mental representation, posterior cortical atrophy