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Adaptation to Altered Visual-Proprioceptive Input in Normals and Schizophrenics
Eugene Ebner, PhD;
Victor Broekema, MA;
Barry Ritzler, PhD
Arch Gen Psychiatry. 1971;24(4):367-371.
Abstract
Twenty schizophrenics without evidence of organic factors in their clinical condition and 20 controls chosen from hospital personnel were tested for adaptation to a brief visual displacement of their hand images. Using an optical-displacement apparatus involving psychomotor performance, the schizophrenic group showed significantly less compensatory, or adaptive, shift in their performances following the optical-displacement procedure. This result was interpreted to support previous work which appears to indocate that schizophrenics are deficient in integrating proprioceptive and visual information under conditions in which the normal patterning among sense modalities is disrupted.
Author Affiliations
Detroit
From the Lafayette Clinic and the Department of Psychology, Wayne State University, Detroit. Dr. Ritzier is currently at the Department of Psychiatry, Yale University, New Haven, Conn.
Footnotes
Accepted for publication July 14, 1970.
Reprint requests to Lafayette Clinic, 951 E Lafayette, Detroit 48207 (Dr. Ebner).
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