Smooth Pursuit
If you're not seeing anything here, you need the
Quicktime Plugin or a better
browser.
"Smooth pursuit is tested by instructing
the subject to carefully follow a small target that is moving slowly
and smoothly back and forth. If the target is moved too rapidly even
normal subjects will demonstrate jerky or cogwheel pursuit. The
pursuit eye movements can accurately track the target and produce a
smooth pattern. Vertical pursuit often shows slight catch up
saccades. Closer view shows a few small catch up saccades especially
when the target reverses direction. This small amount of jerking is
normal."
[Video]
[Chapter
15]
[Home]
[HELP]