The British Journal of Psychiatry 130: 59-63 (1977)
© 1977 The Royal College of Psychiatrists
Smooth pursuit eye movements of schizophrenics and normal people under stress
V Brezinova and RE Kendell
Eye movements while watching an oscillating pendulum were recorded in 24
chronic schizophrenies and 24 matched normal controls. As others have
reported previously, abnormal tracking movements were significantly
commoner in the schizophrenics. However, in a series of experiments with
normal subjects it was found that conditions designed to distract
attention, or to produce declining arousal and attention, produced abnormal
tracking movements indistinguishable from those observed in schizophrenics.
As chronic schizophrenics are known to perform badly on a variety of
psychomotor tasks and there is evidence that this is due to impaired
attention or heightened distractibility, it seems likely that these same
factors are responsible for their poor eye-tracking performance.