Consequently, a split in foveal processing at the point of fixation would cause the exterior letters of fixated words to project to different hemispheres and valuable information provided by conjoint exterior letter features may be lost (see Footnote 4 in File S1).
Thus, the nystagmus consists of a slow movement with angular velocity equal to that of the rotation of the drum, then a fast saccade, or jump from one point of fixation to another, in the opposite direction; the process is repeated indefinitely.
Hence, the saccade from the point of fixation to the target is unbiased.
The point of fixation of the retina at the optic nerve head was respected.
It has the potential to achieve fixation anterior to the axis of rotation while offering a point of fixation in line with the C1/C2 screws.
The point of fixation at the optic nerve head is a useful feature for differentiating between retinal detachment and vitreous membrane [18].
In the second row, by contrast, the location of an extraneous stimulus results in a saccade from the point of fixation that undershoots its target, while in the third row the saccade overshoots its target.
Studies showed that the parasite can spread to the point of "fixation" over the course of 10 to 20 weeks, and remain in the population for at least 5 years.
In the fourth row, changing the location of the extraneous stimulus eliminates the COG bias: because the extraneous stimulus is near the point of fixation rather than the saccade target, the saccade is accurate.
The benefit to this technique lies in the orientation of the axial loading screw, because it is directed to resist the ground reactive forces while also providing a second point of fixation in a crossing screw design.
Because direct surgical fixation would immobilize the globe, action at a distance is required to damp the oscillation at the point of fixation, allowing unhindered gaze shifts at other times.
