Smooth-pursuit eye-movement dysfunction and motor control in schizophrenia: A follow-up study
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- Schlenker, R. & Cohen, R. Eur Arch Psychiatry Clin Nuerosci (1995) 245: 125. doi:10.1007/BF02190739
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Smooth-pursuit eye-tracking data of 63 schizophrenic patients and 52 normal controls are presented and compared with data collected on the same subjects 2 years earlier. Despite considerable clinical stabilization of the patients the overall eye-tracking performance did not improve. Intrasubject stability over 2 years was moderate. Eye-tracking impairment was significantly correlated with number of psychomotor soft signs and with number of errors in an antisaccade task. The correlations indicate that impairment of smooth-purisuit eye movements is likely to be a consequence of deficient motor control.