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        Visual object processing in schizophrenia : evidence for an associative agnosic deficit

        Author
        Gabrovska, V.S.
        Laws, K.R.
        Sinclair, J.
        McKenna, P. J.
        Attention
        2299/5316
        Abstract
        Early studies suggested visual form perception impairment in schizophrenia. To re-examine this claim and characterise the deficit neuropsychologically, 41 schizophrenic patients were administered tests sensitive to different levels of visual object perception and recognition. Intellectually well-preserved patients were examined separately on these and additional tests. Single case analysis was also applied to four patients showing varying degrees of general intellectual impairment. As a group, the patients showed little impairment on tests of early visual object perception, but greater impairment on higher-level visual processing tests, in particular object recognition and naming. This held true for patients with preserved general intellectual function. Single case analysis suggested that patients with schizophrenia have a selective deficit affecting object recognition and identification, with a pattern similar to visual associative agnosia in neurological patients.
        Publication date
        2002
        Published in
        Schizophrenia Research
        Published version
        https://doi.org/10.1016/S0920-9964(02)00168-8
        Other links
        http://hdl.handle.net/2299/5316
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