Motion aftereffects

since October 19, 2005

Warning: This page includes real animations. Please do not keep watching them for a long time. Although this page has carefully avoided the known harmful stimuli, unknown ones might happen to be included. Never copy them.


"Motion aftereffects in the girl of blue eyes 2"

In this movie, eyes rotate clockwise for two seconds and pause for two seconds. In the pause, the eyes appear to rotate clockwise. When observers see the intermediate point of both eyes, only the inner part of each eye appears to rotate, while the whole eye seen in the farther peripheral vision appears to rotate.

Copyright Akiyoshi Kitaoka 2006 (March 1)


"Motion aftereffects in the girl of blue eyes"

In this movie, eyes rotate clockwise for two seconds and pause for two seconds. In the pause, the eyes appear to rotate counterclockwise. When observers see one of them, only the inner part appears to rotate, while the whole eye seen in the peripheral vision appears to rotate.

Copyright Akiyoshi Kitaoka 2006 (March 1)


"SP record on a turntable"

After observers keep seeing this image and keeping blinking, the record appears to expand while the turntable appears to contract.

Copyright Akiyoshi Kitaoka 2005 (November 11)

Warning: Do not keep blinking too frequently. Blink vibrates the retinas in the eye balls, which might possibly cause serious disorders, e.g. retinal detachment or hemorrhage of the fundus for those who have too strong nearsightedness or those who have diabetes.


"Rotating bullets 2"

You can stop the animation by putting the cursor on the image. You can resume it by moving the cursor away from the image.

After the flicker is stopped, the ring appears to rotate clockwise. Part of this effect depends on the motion aftereffect.

Copyright Akiyoshi Kitaoka 2005 (November 7)


"Lake Yamanaka-ko"

Mt. Fuji-san and Lake Yamanaka-ko

You can stop the animation by putting the cursor on the image. You can resume it by moving the cursor away from the image.

After the flicker is stopped, Mt.Fuji appears to contract. This illusory motion chiefly depends on the motion aftereffect.

Copyright Akiyoshi Kitaoka 2005 (November 6)


"Emerald"

You can stop the animation by putting the cursor on the image. You can resume it by moving the cursor away from the image.

The stone appears to expand, though this animation consists of only an image and a blank. After the flicker is stopped, the stone appears to expand. This illusory motion chiefly depends on the motion aftereffect.

Produced by Akiyoshi Kitaoka 2005 (November 1)

The image itself is the elemetal image of the Vasarely illusion, so Kitaoka does not have its copyright.


"Golden fusuma"*

*Fusuma are barriers in Japanese-style architectures, which separate rooms.

You can stop the animation by putting the cursor on the image. You can resume it by moving the cursor away from the image.

The upper row appears to move upper-rightward while the lower one lower-leftward when observers see the center of the image. This animation consists of only an image and a blank. After the flicker is stopped, the apparent motion is reversed. This illusory motion depends on the motion aftereffect as well as the optimized Fraser-Wilcox illusion.

Copyright Akiyoshi Kitaoka 2005 (November 1)


"Comets"

You can stop the animation by putting the cursor on the image. You can resume it by moving the cursor away from the image.

The upper row appears to move rightward while the lower one leftward, though this animation consists of two images. After the flicker is stopped, the upper row appears to move leftward while the lower one rightward. This illusory motion chiefly depends on the motion aftereffect.

Copyright Akiyoshi Kitaoka 2005 (October 28)


"Expanding and contracting moon illusion"

You can stop the animation by putting the cursor on the image. You can resume it by moving the cursor away from the image.

The moon appears to expand, though this animation consists of only an image and a blank. After the flicker is stopped, the moon appears to contract. This illusory motion chiefly depends on the motion aftereffect.

Copyright Akiyoshi Kitaoka 2005 (October 20)


"Rotating fan"

You can stop the animation by putting the cursor on the image. You can resume it by moving the cursor away from the image.

Each ring appears to rotate, though this animation consists of only an image and a blank. The direction of illusory motion of cloud- or mist-like things is counterclockwise while that of spokes is clockwise. After the illusory motion is stopped, the spokes appear to rotate clockwise. This illusory motion chiefly depends on the motion aftereffect. Moreover, the disk appears to expand when flickering, while it appears to contract after the stop of flickering. This is also the motion aftereffect. The motion aftereffect is most manifest when the observers fix their eyes on the center of the disk.

Copyright Akiyoshi Kitaoka 2005 (October 19)

HP of the motion aftereffects (Professor Hiroshi Ashida, Kyoto University)

Reverse spoke illusion (Professor Michael Bach; the image is originally produced by Professor Stuart Anstis)


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