Thursday, February 2, 2012

Illusion Contest Offers Mind-Warping Visions (preview)

Features | Mind & Brain Cover Image: January 2012 Scientific American MagazineSee Inside

10 brain twisters compete to be the best illusion of 2011

SILENCING COLOR: In this winning illusion, the color of every dot in the doughnut changes over time. When the doughnut rotates, the colors continue to change, but viewers do not notice these changes?perhaps because the motion stifles awareness of the shifting colors?even though they can accurately report the current color of the dots if asked. Image: Courtesy of H?ctor Rieiro Barrow Neurological Institute

Jordan Suchow came to three rapid-fire conclusions as he watched his Macintosh laptop plummet toward the floor. First, in approximately 300 milliseconds he was going to be in a heap of trouble?the machine had been given to him by his thesis adviser, George Alvarez of Harvard University. Second, hoping against all hope, he decided that Harvard could probably afford to buy him a new computer. Third, he realized that the most important observation of his life was unfolding right in front of him as his laptop accelerated toward the parquet: the onscreen doughnut that he had programmed to scintillate appeared to have stopped doing so.


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