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Deviant eye tracking in twins discordant for psychosis. A replication.

Authors
  • Holzman, P S
  • Kringlen, E
  • Levy, D L
  • Haberman, S J
Type
Published Article
Journal
Archives of General Psychiatry
Publisher
American Medical Association
Publication Date
Jun 01, 1980
Volume
37
Issue
6
Pages
627–631
Identifiers
PMID: 7190001
Source
Medline
License
Unknown

Abstract

An earlier study of smooth-pursuit eye movements (SPEMs) in monozygotic (MZ) and dizygotic (DZ) twins discordant for functional psychosis reported high concordance of pursuit abnormalities in MZ pairs and moderate concordance in DZ pairs. That study was repeated with younger pairs of twins and with some quantitative refinements in scoring. Results show the same levels of concordance for pursuit dysfunctions, thus replicating the earlier study. The data support an interpretation of genetic factors contributing to variability in SPEMs.

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