Alterations of Eye Movement Control in Neurodegenerative Movement Disorders
Figure 3
Horizontal smooth pursuit eye movements (SPEM) elicited by a sinusoidal oscillating spot ( Hz) and exemplified for a Parkinson’s disease patient (PD, upper panel) and a representative age-matched healthy control (lower panel). The PD patient presents with severely affected SPEM, frequently interrupted by anticipatory saccades. Although SPEM is heavily impaired in PD, patients retained the ability to perform episodes of genuine smooth pursuit (arrow). For recording details, see Figure 2.
