Uploaded January 2012 | Updated September 2026, 2 weeks ago
For a full discussion of this illusion, see http://www.cogsci.nl/illusions/the-loch-ness-after-effect.
The Loch Ness after effect, as described by Mark Wexler. A slowly clockwise rotating disc is occasionally randomized. During these intervals of random noise, a fast counterclockwise rotation is perceived. This counterclockwise rotation is illusory.
For a full discussion of this illusion, see http://www.cogsci.nl/illusions/the-loch-ness-after-effect.
The Loch Ness after effect, as described by Mark Wexler. A slowly clockwise rotating disc is occasionally randomized. During these intervals of random noise, a fast counterclockwise rotation is perceived. This counterclockwise rotation is illusory.
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