Human Gaze Following Response Is Affected by Visual Acuity
Figure 1
(a) shows a schematic drawing of the experimental setup. The stimulus, a Gabor patch, was back-projected via mirrors on a transparent screen. Movement of the mirrors induced a horizontal movement on the screen. (b) shows four examples of Gabor patches. Each stimulus contained a Gabor patch with a unique combination of spatial frequency and black-white contrast. (c) shows an example of the eye movements of an observer who explicitly followed the movement of the Gabor patch. This observer was not included in this experiment. The Gabor patch moved sinusoidally from left to right in the horizontal plane. The top plot of (c) shows the raw eye position trace. The bottom plot of (c) shows the corresponding eye velocity trace (gray line), the stimulus velocity trace (thin black line), and the fitted sinusoid through the eye velocity signal (thick black line).
