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Spatial frequency processing in schizophrenia: trait or state marker?
Imre Kiss1, Zoltán Janka1, György Benedek2
1Department of Psychiatry, University of Szeged.
Abstract:
B. F. O'Donnell et al. found impaired discrimination performances at low and medium spatial frequencies in patients with schizophrenia. In this study, the authors replicated this finding in a group of remitted, unmedicated, and highly functioning outpatients with spared IQ and attentional functions. However, the deficit was restricted to low spatial frequencies (0.5 cycles/degree), which suggests that this deficit is a trait marker of schizophrenia.
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