Key points are not available for this paper at this time.
Eye drift at direct forward and lateral gaze angles in darkness, and concurrent saccades were examined in 15 normal subjects. Gaze dependent (centripetal) and constant (unidirectional) eye drift were found; four subjects had no systematic eye drift.In darkness, the appearance of saccades in an opposite direction to that of the eye drift was dependent upon drift velocity, and not upon the total amount of eye deviation. Drift velocities over 0.6 deg/ s were regularly accompanied by 'countersaccades', whereas during lower drift velocities deviations up to 15 deg were not interrupted by saccades.
Hess et al. (Tue,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: