ArticleSchizophrenia research2014
Contour integration impairment in schizophrenia and first episode psychosis: state or trait?
Article in Schizophrenia research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed.
- Visual integration deficits associated with psychosis are independent of diagnosis.Schizophrenia (Heidelberg, Germany) · 2025Article
- Examining the joint and unique contributions of contour integration and visuospatial memory to altered eye gaze perception in schizophrenia.Schizophrenia research · 2025Article
- Painting psychosis: an empirical investigation of the self-portraits of Edvard Munch.Frontiers in psychiatry · 2025Article
- Perceptual Functioning.Current topics in behavioral neurosciences · 2023Article
- Slowed alpha oscillations and percept formation in psychotic psychopathology.Frontiers in psychology · 2023Article
- Development and Evaluation of a Visual Remediation Intervention for People with Schizophrenia.Journal of psychiatry and brain science · 2020Article
- Early Visual Processing Is Associated With Social Cognitive Performance in Recent-Onset Schizophrenia.Frontiers in psychiatry · 2020Article
- Heritability of human visual contour integration-an integrated genomic study.European journal of human genetics : EJHG · 2019Article
- Frequency specific resting state functional abnormalities in psychosis.Human brain mapping · 2018Article
- Poorer Integration of Local Orientation Information Occurs in Students With High Schizotypal Personality Traits.Frontiers in psychiatry · 2018Article
- Poorer Search Efficiency in Healthy Young Adults With High Schizotypal Personality Traits.Frontiers in psychiatry · 2018Article
- Visual integration dysfunction in schizophrenia arises by the first psychotic episode and worsens with illness duration.Journal of abnormal psychology · 2016Article
- The NEWMEDS rodent touchscreen test battery for cognition relevant to schizophrenia.Psychopharmacology · 2015Review
- Comparison of visual perceptual organization in schizophrenia and body dysmorphic disorder.Psychiatry research · 2015Article
- Cortical contributions to impaired contour integration in schizophrenia.Neuropsychologia · 2015Article
- INTERMITTENT DEGRADATION AND SCHIZOTYPY.Schizophrenia research. Cognition · 2015Article
- Hierarchical Classes Analysis (HICLAS): A novel data reduction method to examine associations between biallelic SNPs and perceptual organization phenotypes in schizophrenia.Schizophrenia research. Cognition · 2015Article
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Authors and funding
4 authors.
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Abstract
Contour integration is a fundamental visual process that recovers object structure by representing spatially separated edge elements as a continuous contour or shape boundary. Clinically stable persons with schizophrenia have repeatedly been shown to be impaired at contour integration but it is unclear whether this process varies with clinical state or whether it arises as early as the first episode of psychosis. To consider these issues, we administered a contour integration test to persons with chronic schizophrenia and to those with a first episode of psychosis. The test was administered twice-once at admission to short term psychiatric hospitalization and once again at discharge. A well-matched healthy control group was also tested across the same time points. We found that contour integration performance improved to the same degree in all groups over time, indicating that there were no recovery effects over and above normal practice effects. Moreover, the schizophrenia group demonstrated poorer contour integration than the control group and the first episode group exhibited intermediate performance that could not be distinguished from the other groups. These results suggest that contour integration ability does not vary as a function of short-term changes in clinical state, and that it may become further impaired with an increased number of psychotic episodes.
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