Eye Movements in Schizophrenic vs Normal Subjects

To the Editor.—  The article by Schweitzer et al in the August Archives (35:982-985, 1978) was interesting and thought-provoking. Preliminary studies of our own, however, along with earlier results obtained by Gur et al,¹ lead us to raise some serious questions related to the interpretations offered by Schweitzer et al of their own results.Gur et al recorded eye movement by videotape and found that subjects tended toward unidirectional eye movements more frequently when the experimenter faced the subject. Subjects moved their eyes primarily to the right or primarily to the left regardless of question type (verbal, spatial, numerical). Eye movements tended to be more bidirectional and differentially correlatable with question type if the experimenter sat behind the subject.We have extended and generalized this finding in our own research (unpublished data, 1977). Our subjects were 28 right-handed men between the ages of 18 and 24 years. Slides of letters