Figure 1.
Schematic explanation of the angle of eye vergence.
The eyes focus on a single point in space. The angle of eye vergence relates to the distance of the focus point to the eyes. For a near point the vergence angle (α1) is larger than for a far point (α2). α represents the angle of eye vergence.
Figure 2.
A: The cue/no-cue task. B The matching task. Time is from fixation onset.
Figure 3.
Average reaction times from the cue/no-cue task (A) and from the matching task (B). Error bars are SEM.
Figure 4.
Modulation in eye vergence while performing the cue/no-cue task.
A: Average modulation in the angle of eye vergence from all subjects in the cue (green) and no-cue (red) conditions for FI (continuous lines) and FD (dotted lines) subjects. Higher values of vergence angle represent convergence. Time is from cue/no-cue onset. B: Mean modulation in eye vergence for FI and FD subjects. Asterisks denote significant (p<0.01) differences. Error bars are SEM.
Figure 5.
Modulation in eye vergence while performing the matching task.
A: Average modulation across all subjects in the angle of eye vergence during the task (black) and control task (blue) for FI (continuous lines) and FD (dotted lines) subjects. Higher values of vergence angle represent convergence. Time is from the onset of the peripheral change B: Mean modulation in eye vergence for FI and FD subjects. Asterisks denote significant (p<0.01) differences. Error bars are SEM.