Big Spanish Castle. Stare at the dot for 30 seconds.
Then, without moving your eyes, move the mouse over the image. The image will look like it's in color until you move your eyes. Very cool illusion. Cognitive Daily: Casual Fridays: We can identify "mystery f. How good are humans at identifying faces?
Amazingly good, even with only a few sparse pixels’ worth of information. Inspired by the research of Pawan Sinha, who had found that people can recognize faces using just 12 × 14 pixels’ worth of information, we wondered if people can distinguish between faces and non-faces with even less information. So, last Friday, we asked CogDaily readers to try to identify faces as small as one-quarter the size of those used in Sinha’s study: just 6 by 7 pixels.