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Title Feature Captured Motion illusion (Third movie)
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Description In the first movie you see a blue disk running circularly in a clockwise direction. In the second movie you also see a blue disk running in the same direction inside of the circular trajectory depicted by the running shadow. When ISI (Inter Stimulus Interval) is increased, as shown in the third movie, you can realize that the blue disks are presented at only four places among the 16 disks, at the 12 o’clock, 3 o’clock, 6 o’clock and 9 o’clock positions. You also see each black disk move in turn in the counter clockwise direction instead of the running blue disk in the clockwise direction.
This phenomenon is based on the new apparent motion (v phenomenon) originally reported by Hayashi, K. (1990). Hayashi proposed that this v phenomenon is caused by the sequential excitation of off-neurons. Consideration from a motion detection theory viewpoint, v phenomenon is a typical example of the energy-based motion, as no feature of moving object is specified. When placing blue disks on the corners of the circular trajectory depicted by the moving shadow, the feature of the blue disk is easily captured by the moving shadow. Hence, you see the blue disk running around in a clockwise direction.
Usually we seldom see energy-based motion alone in our central vision, therefore when you put some clues for features on the trajectory of energy-based motion, these clues are easily captured by or mixed with energy–based motion, and the blue disk running circularly is perceived. When the ISI between each black disk is increased to around 40msec, you can see the counter clock-wise apparent motion by the black disk in the central vision (the feature-based motion), and at the same time you can see the clockwise apparent motion by the shadow in the peripheral vision (energy-based motion).
Date Jan 14, 2017
Last Modified Date Mar 2, 2018 20:17:11
Created Date Jan 14, 2017 23:10:23
Contributor Makoto Ichikawa (michikawa)
Item Type Stimulus
Change Log(History)
Mar 2, 2018 Modified; Index.
Jan 14, 2017 関連アイテム を変更
Stimulus type Picture
Ko Nakamura
Stimulus file 2016錯視コンテスト中村03.mov
Type : video/quicktime Download
Size : 440.3 KB
Last updated : Jan 14, 2017
Downloads : 2

Total downloads since Jan 14, 2017 : 2
Rights Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
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/ Public / Stimulus
/ Public / Stimulus / Illusory Patterns
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