Monocular depth effects on perceptual fading.
After prolonged viewing, a static target among moving non-targets is perceived to repeatedly disappear and reappear. An uncrossed stereoscopic disparity of the target facilitates this Motion-Induced Blindness (MIB). Here we test whether monocular depth cues can affect MIB too, and whether they can also affect perceptual fading in static displays. Experiment 1 reveals an effect of interposition: more MIB when the target appears partially covered by, than when it appears to cover, its surroundings. Experiment 2 shows that the effect is indeed due to interposition and not to the target's contours. Experiment 3 induces depth with the watercolor illusion and replicates Experiment 1. Experiments 4 and 5 replicate Experiments 1 and 3 without the use of motion. Since almost any stimulus contains a monocular depth cue, we conclude that perceived depth affects perceptual fading in almost any stimulus, whether dynamic or static.
Hsu
Li-Chuan
LC
Medical College, China Medical University, Taichung, Taiwan. lchsu@mail.cmu.edu.tw
Kramer
Peter
P
Yeh
Su-Ling
SL
D000222:Adaptation, Physiological / Q000502:physiology; D003463:Cues; D003867:Depth Perception / Q000502:physiology*; D006801:Humans; D009039:Motion Perception / Q000502:physiology; D009903:Optical Illusions / Q000502:physiology*; D010470:Perceptual Masking / Q000502:physiology; D010775:Photic Stimulation / Q000379:methods; D015349:Vision, Monocular / Q000502:physiology*