Inhibition of vection by red.
We investigated the effects of colors on vection induction. Expanding optical flows during one's forward self-motion were simulated by moving dots. The dots and the background were painted in equiluminant red and green. Experiments 1 and 2 showed that vection was weaker when the background was red than when the background was green. In addition, Experiment 3 showed that vection was weaker when the moving dots were red than when the dots were green. Experiment 4 demonstrated that red dots on a red background induced very weak vection, as compared with green dots on a green background. In Experiments 5 and 6, we showed that the present results could not be explained by a luminance artifact. Furthermore, Experiment 7 showed that a moving red grating induced weaker vection than did a green one. We concluded that a red visual stimulus inhibits vection.
Seno
Takeharu
T
Kyushu University, Fukuoka, Japan. seno@design.kyushu-u.ac.jp
Sunaga
Shoji
S
Ito
Hiroyuki
H
D000328:Adult; D001288:Attention; D003118:Color Perception; D005260:Female; D006801:Humans; D007266:Inhibition, Psychological; D007699:Kinesthesis; D008297:Male; D009039:Motion Perception; D057849:Optic Flow; D009903:Optical Illusions; D009949:Orientation; D010364:Pattern Recognition, Visual; D011601:Psychophysics; D011930:Reaction Time; D055815:Young Adult