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Comment by SAI_Peregrinus | Hacker News Reader

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SAI_Peregrinus·

The illusion creator's homepage is an old favorite of mine.

http://www.ritsumei.ac.jp/~akitaoka/index-e.html

The illusions discussed in the article are the Cyanophyceae under the shape illusions category.

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http://www.ritsumei.ac.jp/~akitaoka/ACSwamp2010.jpg got me. But there's a catch: it only works when you scroll. So you have to go to http://www.ritsumei.ac.jp/~akitaoka/index-e.html and scroll down till you see it. It looks bizarre.

Wow, and it doesn't even require color. There's a grayscale illusion which behaves similarly -- maybe even a bit stronger! -- at:

http://www.psy.ritsumei.ac.jp/~akitaoka/mesh-driftillusion01...

Works for me without scrolling.

Yeah, that set is a great one. I've noticed the scrolling effect too, it definitely intensifies the movement. I suspect the cause of the movement is the saccades shifting where it is in the visual field slightly, and scrolling is a much bigger shift.

Bobbing my head up and down also works.

He's also very friendly on his Facebook account. He's got quite a few fans there.

I noticed that the rotating snake illusion only seems to occur when my eyes are actually moving; if I focus on a specific spot for long enough, they seem to all stop spinning.

Really neat stuff.

Are there examples of these patterns in use in real world logos or, e.g., website designs? Not designed to make people dizzy, but used to give an illusion of animation maybe?

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