Reduced facilitation effect of collinear flankers on contrast detection reveals impaired lateral connectivity in the visual cortex of schizophrenia patients.

By A. Must, Z. Janka, G. Benedek, Szabolcs Kéri. 2004

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Gamma-Aminobutyric Acid Concentration is Reduced in Visual Cortex in Schizophrenia and Correlates with Orientation-Specific Surround Suppression (2010, unknown): “Among the medicated patients, one subject was on a typical antipsychotic and seven were on atypical antipsychotics.”
Weak suppression of visual context in chronic schizophrenia. (2005, background): “[5] reported that, in schizophrenic observers, the detection of an oriented target is less facilitated by the presence of collinear ‘flanks’ than usual.”
Weakened Center-Surround Interactions in Visual Motion Processing in Schizophrenia (2006, background): “Moreover, Keri and colleagues found that weakening of contextual interactions in schizophrenia was correlated with negative symptom severity in one study (Keri et al., 2005b), but not in two related investigations (Must et al., 2004; Keri et al., 2005a).”