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. 2011 Dec 14;2:78. doi: 10.3389/fneur.2011.00078

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Copyright © 2011 Fukushima, Fukushima and Warabi.

This is an open-access article distributed under the terms of the Creative Commons Attribution Non Commercial License, which permits non-commercial use, distribution, and reproduction in other forums, provided the original authors and source are credited.

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Eye movements of a patient with Parkinson’s disease and an age-matched normal control. (A1,A2) Memory-based pursuit (A1) and ramp pursuit using a single spot (A2) of a Hoehn-Yahr stage III patient (73 years old). (B1,B2) Normal control. In (A1,B1) Go trials with rightward and leftward cue 1 motion were combined. Eye velocity during saccades was clipped. Bottom traces in (A1,B1) are de-saccaded, averaged eye velocity for cue 1 rightward and cue 1 leftward as indicated by colors. Modified from Fukushima et al. (2011b) with permission.