1. If the background is moving (fixate on the dot in the middle), it is difficult to see that the face are morphing from Leighton Meester into Natalie Portman. This is a demonstration of what Suchow and Alvarez have called "change silencing".

    For more optical illusions, see http://www.cogsci.nl

    # vimeo.com/37853832 Uploaded 558 Plays 0 Comments
  2. If the faces are moving (fixate on the cross in the middle), it is very hard to see that they are morphing from Leighton Meester into Natalie Portman. This is a demonstration of what Suchow and Alvarez have called "change silencing".

    For more optical illusions, see http://www.cogsci.nl

    # vimeo.com/37816846 Uploaded 1,711 Plays 0 Comments
  3. In this illusion, Mario appears to move vertically, whereas the shell appears to move horizontally. In reality, as you can see when the background stops moving, both Mario and the shell move in an identical counter-clockwise circle. For more illusions, see http://www.cogsci.nl/illusions

    Based on Stuart Anstis' "Flying Bugs" illusion.

    Figure credits: http://mario.wikia.com/
    Wallpaper credits: http://www.ipad-wallpapers.com/displayimage.php?pos=-1177

    # vimeo.com/36403115 Uploaded 3,742 Plays 0 Comments
  4. For more illusions and explanations, see http://www.cogsci.nl/illusions

    If you follow the moving dot with your eyes, you will see that the edges of the diamond appear to move.

    # vimeo.com/34713660 Uploaded 1,929 Plays 0 Comments
  5. 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 discussion of this illusion, see http://www.cogsci.nl/illusions/the-loch-ness-after-effect

    # vimeo.com/34712307 Uploaded 320 Plays 0 Comments

Optical illusions

Sebastiaan Mathot

Animated optical illusions from Cogsci.nl

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