Swimming around in a mixture of language and matter, humans occupy a particular evolutionary niche mediated by something we call 'consciousness'. To Professor Nicholas Humphrey we're made up of "soul dust": "a kind of theatre... an entertainment which we put on for ourselves inside our own heads." But just as that theatre is directed by the relationship between language and matter, it is also undermined by it. It all depends how you think it.
posted by 0bvious on Feb 4, 2011 - 17 comments

Is seeing believing? BBC Horizon looks at sensory perception, illusions and the interplay of our different senses. (Full program for UK viewers here). Makes you feel like you've entered The Twilight Zone. [more inside]
posted by philipy on Oct 18, 2010 - 16 comments

Of Jock Straps and Conspiracy Theories. A new study looks at how lacking control increases the tendency for magical thinking and illusory pattern perception. [Via]
posted by homunculus on Oct 5, 2008 - 87 comments

Virtual Out-of-Body Experience. Using two procedures to deliberately scramble a person's visual and tactile senses, neuroscientists are able to induce "out-of-body" experiences in people. The effect is the same as the 'rubber hand illusion', but extends the effect to the whole body instead of just one limb (you can try the hand illusion for yourself).
posted by homunculus on Aug 24, 2007 - 11 comments

Beethoven stretches out and relaxes. Gorillas belch to let others know where they are. Fish sing the body electric (.mov, 12 MB) for food and safety. How has your own perception shaped your worldview?
posted by Blazecock Pileon on Aug 14, 2006 - 4 comments

Researchers have found that prolonged concentration on a difficult task actually switches off a person's self awareness. Fancy experiencing this sensation for yourself? That would be an oxymoron in existence. Just lay back and let the orgasm take hold.
posted by 0bvious on Apr 20, 2006 - 31 comments

If the universe is a hologram and the healthy human brain a valve of consciousness then where'd this mental infinity come from? Are we simply living the simulacrum? Or does Pi protect us all, forever, infinitely?
posted by 0bvious on Nov 22, 2005 - 39 comments

How do we see? This site by Dr. Dale Purves makes it obvious we don't see things like a camera in any way. Check out the interactive demos, test your perceptual abilities, and read the research explaining why this happens. Number 12: Color Contrast Cube is particularly startling. Warning: Totally Flash interface, but appropriate for subject matter. More experiments at a less Flash-y associate's site.
posted by JZig on Feb 10, 2005 - 19 comments

Red and green dots have never been so interesting. At least to a geek like me. I love it when my brain plays tricks on me.
posted by jeremy on May 21, 2004 - 33 comments

sandlot science ... optical illusions and visual oddities... hundreds of exhibits and interactive demonstrations.
posted by crunchland on Nov 3, 2003 - 4 comments

A professor of vision science at MIT understands that life isn't just black and white, even though we often see it that way. This amazing illusion proves it, and these slick, fast-loading, Flash demonstrations of lightness perception show how it's done. (My favorite is the "Koffka Ring".) White paper here, for deeper background.
posted by taz on Sep 27, 2002 - 29 comments