Oblique saccadic eye movements. Independence of horizontal and vertical channels
A. T. Bahill and L. Stark
Horizontal and vertical components of oblique saccadic eye movements are
dynamically independent. That is, they have independent dynamic
trajectories determined by either the presence, or the absence, as well as
the magnitudes of dynamic overshoot, glissades, overlapping saccades, and
closely spaced saccades. Temporally, oblique movements manifest varying
degrees of independence, for the two components can begin and end either
together or separately. Purely horizontal saccades (ie, between two points
on a horizontal line) usually show crosstalk demonstrated by extraneous,
transient, vertical components. Therefore, saccades are very seldom linear
or straight; the trajectories are usually curved.
