Perceptual grouping in disorganized schizophrenia

  title={Perceptual grouping in disorganized schizophrenia},
  author={Peter J. Uhlhaas and William A. Phillips and Gordon Mitchell and Steven M. Silverstein},
  journal={Psychiatry Research},

Sex, symptom, and premorbid social functioning associated with perceptual organization dysfunction in schizophrenia

Analysis of Ebbinghaus illusion performance suggests there is a complex relationship among patient sex, clinical factors and perceptual abilities with relatively intact bottom–up grouping processes in females, but greater problems, compared to males with more top–down mediated context sensitivity.

Cognition in schizophrenia and schizo-affective disorder: impairments that are more similar than different

The findings of this study suggest that, with regard to deficits in cognition, schizophrenia and schizo-affective disorder do not demonstrate major significant distinctions, providing evidence consistent with the hypothesis that there is no natural distinction between cognitive functioning in schizophrenia andSchizophrenia.

Integrated assessment of visual perception abnormalities in psychotic disorders and relationship with clinical characteristics

These results demonstrate significant abnormalities in multiple visual processing tasks in patients with psychotic disorders, adding to the literature implicating visual abnormalities in these conditions.

Role of visual integration in gaze perception and emotional intelligence in schizophrenia.

Individuals with schizophrenia showed compromised visual integration, and this may play a significant role in the observed deficits in higher level processing of social information in the disorder.

Visual context processing deficits in schizophrenia: effects of deafness and disorganization.

The primary implications of these data are that perceptual organization impairment in schizophrenia is plastic and that it is related to a broader failure in coordinating cognitive activity.

Perceptual organization impairment in schizophrenia and associated brain mechanisms: review of research from 2005 to 2010.

Preliminary data on drug effects on PO and on changes in response to treatment suggest that anomalies in PO may furnish a biomarker for the integrity of its associated biological mechanisms.

isual Perception and Its Impairment in Schizophrenia

Use of visual gain control and integration fit a number of the criteria suggested by the NTRICS committee, provide fundamental constructs for understanding the visual system in schizophrenia, and are inclusive of both owl-level and higher-level perceptual deficits.



Theory of mind and perceptual context‐processing in schizophrenia

Overall, ToM performance was linked to deficits in context processing in schizophrenia patients, indicating a possible link between deficits in ToM and perceptual context processing, which together with deficits in perceptual grouping, are part of a broader dysfunction in cognitive coordination in schizophrenia.

Perceptual Organisation in Schizophrenia: Evidence of Intact Processing of Configural Stimuli

Assessment of the ability to process configural stimuli made up of noncontiguous elements using Kahneman and Neisser's Visual Suffix Task provides further evidence that schizophrenia patients can perceptually organiseconfigural stimuli, and that their perceptual organisation difficulties are limited to organising nonconfigural sets of stimuli into perceptual wholes.

Perceptual organization in schizophrenia spectrum disorders: empirical research and theoretical implications.

A synthesis of this evidence reveals that this body of work has produced reliable evidence for deficits in schizophrenia, as well as for the clinical, stimulus, and task parameters associated with normal and abnormal performance.

Perceptual organization in schizophrenia: the processing of symmetrical configurations.

Assessing patients with poor premorbid schizophrenia' ability to process symmetrical configurations that develop early and have strong prepotent structures supports their competence in perceptually processing symmetrical configuration and disconfirms the hypothesis that their input deficiencies represent a general deficiency in all forms of perceptual organization.

Perceptual organization in schizophrenia: utilization of the Gestalt principles.

The hypothesis that visual perceptual organization, in terms of utilizing the Gestalt principles, is relatively intact in people with schizophrenia is supported.

Evidence for impaired visual context processing in schizotypy with thought disorder

Impaired sensory processing as a basis for object-recognition deficits in schizophrenia.

The results support models of widespread dysfunction in information processing in patients with schizophrenia involving both sensory and cognitive regions and suggest that deficits in perceptual closure may contribute to the muted world experience of patients with the persistent negative symptoms of schizophrenia.