Have you ever wondered why you don't see motion blur when your eyes flick to a new position? Why, if you sit in front of a mirror and watch yourself, you never see your eyes move? That is saccadic masking
, one of
the lies your brain tells to avoid confusing you.
Have you noticed that the first tick after glancing at a clock with a second hand can take more than one second? No, it's not just you! That's a related phenomenon called chronostasis
, or more commonly the stopped clock illusion
posted by gilrain
on Aug 16, 2012 -
The average human eye has three types of cone cells, each of which is sensitive to a different wavelength range of visible light. The difference in the relative signal from the three cones allows us to distinguish colors. Unfortunately, since these sensitivity ranges overlap, there are some combinations of signals from the cones that can't be created by light emitted from a real object. These are the so-called "imaginary colors
". However, by selectively overstimulating
one or more types of cone, we can still perceive these colors; this is the principle behind the Eclipse of Titan
, an optical illusion which produces both a green and a cyan that don't otherwise appear in nature. (Similar effects can be seen in the Eclipses of Mars
, and Triton
.) [more inside]
posted by Upton O'Good
on May 10, 2010 -
Your daily dose of perception-bending.
Stare at the center of this video (wmv or flash) for a minute or two then look away from the screen at your surroundings. You'll experience an interesting and somewhat disconcerting effect. Not appropriate for anyone prone to headaches or seizures.
posted by brain_drain
on Aug 28, 2006 -
Masters of Deception
"There are a number
of incredible artistic works
featured in Masters of Deception, which require movement to appreciate their full impact. Additionally, I had in my possession various interviews with some of the book's featured artists that I wanted to share with my readership. Unfortunately, the publisher was unwilling to produce a CD to accompany the book
. I have created this web site, therefore, to augment and enhance the reader's experience by presenting those works and interviews that I could not present in book form." Al Seckel.
posted by hortense
on Aug 19, 2005 -