Contour integration impairment in schizophrenia and first episode psychosis: state or trait?

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 int

SUBMITTER: Feigenson KA 

PROVIDER: S-EPMC4254521 | biostudies-literature | 2014 Nov

REPOSITORIES: biostudies-literature