Pursuit eye movements in psychopathology: effects of target characteristics
Levin, S.; Lipton, R.B.; Holzman, P.S.
Biological Psychiatry 16(3): 255-267
1981
ISSN/ISBN: 0006-3223 PMID: 7225489 Document Number: 180410
Tests of smooth pursuit eye movements using two types of targets, at three different frequencies, with two types of superimposed cognitive tasks were performed by 16 manic-depressive patients, 16 schizophrenic patients, and 14 normal subjects. The results showed that patients track more poorly than normals at all frequencies with either a real pendulum or an electronically driven target. Tracking efficiency of all subjects is improved by both superimposed cognitive tasks. Differences between patients and nonpatients exist under all experimental conditions.