Comparison of visual perceptual organization in schizophrenia and body dysmorphic disorder

PSYCHIATRY RESEARCH

卷:229

Article

Silverstein, Steven M.^1,2  Elliott, Corinna M.³  Feusner, Jamie D.⁴  Keane, Brian P.^1,2  Mikkilineni, Deepthi^1,2  Hansen, Natasha³  Hartmann, Andrea³  Wilhelm, Sabine³ 

[1] Rutgers State Univ, Dept Psychiat, Piscataway, NJ 08854 USA

[2] Rutgers State Univ, Univ Behav Hlth Care, Piscataway, NJ 08854 USA

[3] Harvard Univ, Sch Med, Dept Psychiat, Massachusetts Gen Hosp, Boston, MA 02115 USA

[4] Univ Calif Los Angeles, David Geffen Sch Med, Dept Psychiat & Biobehav Sci, Los Angeles, CA 90095 USA

关键词: Schizophrenia;    Body dysmorphic disorder;    Perception;    Vision;    Perceptual organization;    Obsessive-Compulsive Disorder;    RDoC;   

DOI  :  10.1016/j.psychres.2015.05.107

来源: Elsevier

【 摘 要 】

People with schizophrenia are impaired at organizing potentially ambiguous visual information into well-formed shape and object representations. This perceptual organization (PO) impairment has not been found in other psychiatric disorders. However, recent data on body dysmorphic disorder (BDD), suggest that BDD may also be characterized by reduced PO. Similarities between these groups could have implications for understanding the RDoC dimension of visual perception in psychopathology, and for modeling symptom formation across these two conditions. We compared patients with SCZ (n=24) to those with BDD (n=20), as well as control groups of obsessive compulsive disorder (OCD) patients (n=20) and healthy controls (n=20), on two measures of PO that have been reliably associated with schizophrenia-related performance impairment. On both the contour integration and Ebbinghaus illusion tests, only the SCZ group demonstrated abnormal performance relative to controls; the BDD group performed similarly to the OCD and CON groups. In addition, on both tasks, the SCZ group performed more abnormally than the BDD group. Overall, these data suggest that PO reductions observed in SCZ are not present in BDD. Visual processing impairments in BDD may arise instead from other perceptual disturbances or attentional biases related to emotional factors. (C) 2015 Elsevier Ireland Ltd. All rights reserved.

【 授权许可】

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