Smooth pursuit initiation in young and elderly subjects.

  title={Smooth pursuit initiation in young and elderly subjects.},
  author={Mark J. Morrow and James A. Sharpe},
  journal={Vision research},
  volume={33 2},
Smooth pursuit initiation to step-ramp stimuli was investigated in normal subjects, young and elderly. Older subjects had significant reductions in initial pursuit acceleration before saccades, and in post-saccadic and peak pursuit velocities. Aging impairs the open-loop performance of the pursuit system, possibly by decreasing sensitivity to retinal image motion or by limiting the conversion of visual motion signals into commands for smooth pursuit. Lower open-loop pursuit gain degrades steady… CONTINUE READING