Non-veridical visual motion perception immediately after saccades.
It is widely assumed that combining the eye movement vector with the motion vector of the retinal image is both sufficient and necessary for recovering the direction and speed of visual motion. Here, we report that execution of a saccadic (rapid) eye movement in the dark systematically biased subsequent perceptual judgment of the direction of visual motion in the direction opposite to the saccade. This non-veridical motion perception reached a maximum immediately after saccade offset and then decayed in approximately equal to 100 ms. These results suggest that the oculomotor signal interacts with central mechanisms related to motion and possibly form perception, as well as spatial vision, as documented with mislocalization of visual objects at the time of saccades.
Park
J
J
Department of Psychology, Seoul National University, Kwanak, Seoul 151-742, South Korea.
Lee
J
J
Lee
C
C
D000328:Adult; D005403:Fixation, Ocular / Q000502:physiology; D006801:Humans; D009039:Motion Perception / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D012438:Saccades / Q000502:physiology*; D013997:Time Factors; D015348:Vision, Binocular / Q000502:physiology