title: Spatial frequency processing in schizophrenia: trait or state marker?
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.
authors.affiliation: Department of Psychiatry, University of Szeged.
authors.forename: Imre
authors.initials: I
authors.lastname: Kiss
authors.affiliation: Department of Psychiatry, University of Szeged.
authors.forename: Zoltán
authors.initials: Z
authors.lastname: Janka
authors.affiliation: Department of Physiology, University of Szeged.
authors.forename: György
authors.initials: G
authors.lastname: Benedek
authors.affiliation: Department of Psychiatry and Department of Physiology, University of Szeged.
authors.forename: Szabolcs
authors.initials: S
authors.lastname: Kéri
mesh_terms: D000328:Adult; D004192:Discrimination, Psychological; D005260:Female; D006801:Humans; D008297:Male; D010468:Perceptual Disorders / Q000175:diagnosis / Q000209:etiology*; D012559:Schizophrenia / Q000150:complications*; D012720:Severity of Illness Index; D013028:Space Perception; D011795:Surveys and Questionnaires