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Visual Context Processing in Schizophrenia
Open accessAbstract
Abnormal perceptual experiences are central to schizophrenia but the nature of these anomalies remains undetermined. We investigated contextual processing abnormalities across a comprehensive set of visual tasks. For perception of luminance, size, contrast, orientation and motion, we quantified the degree to which the surrounding visual context altered a center stimulus' appearance. Across tasks, healthy participants showed robust contextual effects, as evidenced by pronounced misperceptions of center stimuli. Schizophrenia patients exhibited intact contextual modulations of luminance and size, but showed weakened contextual modulations of contrast, performing more accurately than controls. Strong motion and orientation context effects correlated with worse symptoms and social functioning. Importantly, the overall strength of contextual modulation across tasks did not differ between controls and schizophrenia patients. Additionally, performance measures across contextual tasks were uncorrelated, implying discrete underlying processes. These findings reveal that abnormal contextual modulation in schizophrenia is selective, arguing against the proposed unitary contextual processing dysfunction.
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“Thus, these authors hypothesized that the pre-cortical stages of the visual system, in which luminance is supposed to be processed, were spared, thereby contradicting Norton's conclusions.”
From What visual illusions teach us about schizophrenia (2014) · cites this paper as Yang et al., 2012
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“Yang et al. (2012) and Tibber et al. (2013) found that luminance context processing was similar, whereas the strength of the illusions was inferior in patients for the other psychophysical parameters (e.g., contrast, orientation, size or motion).”
From What visual illusions teach us about schizophrenia (2014) · cites this paper as Yang et al., 2012
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Metadata
- Authors
- Yang, E., Tadin, D., Glasser, D. M., Hong, S. W., Blake, R., & Park, S.
- Affiliations
- Seoul National University (KR)
- University of Rochester Medicine (US)
- University of Rochester (US)
- Vanderbilt University (US)
- Corresponding author
- Park, Sohee
- Venue
- Clinical Psychological Science
- Publisher
- SAGE Publications
- Published
- 2012-11-15
- Volume
- 1
- Issue
- 1
- Pages
- 5-15
- ISSN
- 2167-7026 (ISSN-L)
- 2167-7034
- PMC
- PMC3756604
- OpenAlex
- W2147619090
- Cited by
- 104
- References
- 43
- Citations by year
- 2026: 4 · 2025: 4 · 2024: 6 · 2023: 15 · 2022: 8 · 2021: 6 · 2020: 7 · 2019: 4 · 2018: 9 · 2017: 3 · 2016: 12 · 2015: 11 · 2014: 6 · 2013: 9
- FWCI
- 5.91
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Clinical Psychological Science (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institute of Mental Health (R01MH073028)
- National Eye Institute (R01EY019295, T32EY007125, T32EY007135, P30EY001319)
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (P30HD015052)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
- Life Sciences › Neuroscience › Cognitive Neuroscience › Hallucinations in medical conditions
- Keywords
- schizophrenia, contextual modulation, perceptual abnormalities, luminance perception, size perception, contrast perception, motion perception, orientation perception, contextual effects, social functioning, symptom severity
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