Eye movement control during visual pursuit in Parkinson's disease.

ABSTRACT:

Background

Prior studies of oculomotor function in Parkinson's disease (PD) have either focused on saccades without considering smooth pursuit, or tested smooth pursuit while excluding saccades. The present study investigated the control of saccadic eye movements during pursuit tasksand assessed the quality of binocular coordinationas potential sensitive markers of PD.

Methods

Observers fixated on a central cross while a target moved toward it. Once the target reached the fixation cross, observers began to pursue the moving target. To further investigate binocular coordination, the moving target was presented on both eyes (binocular condition), or on one eye only (dichoptic condition).

Results

The PD group made more saccades than age-matched normal control adults (NC)

SUBMITTER: Wu CC 

PROVIDER: S-EPMC6109371 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature