Perceptual grouping in disorganized schizophrenia

@article{Uhlhaas2006PerceptualGI,
  title={Perceptual grouping in disorganized schizophrenia},
  author={Peter J. Uhlhaas and William A. Phillips and Gordon Mitchell and Steven M. Silverstein},
  journal={Psychiatry Research},
  year={2006},
  volume={145},
  pages={105-117}
}

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...

References

SHOWING 1-10 OF 65 REFERENCES

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.

Stimulus configuration and context effects in perceptual organization in schizophrenia.

The perceptual organization deficit is most pronounced in actively symptomatic patients with poor premorbid schizophrenia, and the deficit reflects, in part, deficient top-down influences to basic perceptual processes.

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

...