18 posts tagged with perception and illusion.
Displaying 1 through 18 of 18. Subscribe:

“So your wallet is in your pocket?”

Apollo Robbins is a spectacular pickpocket whose work extends to neuroscience, the military and magic.
posted by xowie on Dec 31, 2012 - 27 comments

A Watched Clock Never Moves

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 - 46 comments

Octarine?

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, Neptune, and Triton.) [more inside]
posted by Upton O'Good on May 10, 2010 - 64 comments

color-changing card trick

A color-changing card trick. (Related to this old favorite.)
posted by Upton O'Good on Apr 22, 2010 - 25 comments

The Body Swap Illusion

If I Were You: Perceptual Illusion of Body Swapping. Expanding on previous experiments, researchers discover how to induce a "body-swap" illusion, whereby subjects perceive the body of another as if it were their own.
posted by homunculus on Dec 4, 2008 - 22 comments

Lacking Control Increases Magical Thinking

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

Silhouette pirouette

Is the dancer spinning clockwise or counterclockwise? An optical illusion. [more inside]
posted by painquale on Oct 8, 2007 - 133 comments

Video Ergo Sum

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

Illusion is the first of all pleasures

"Illusion is the first of all pleasures"
posted by MetaMonkey on Nov 7, 2006 - 12 comments

Trippy optical illusion

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 - 51 comments

2D => 3D

Carnegie Mellon researchers have created a program that can automatically generate a 3-D model from a single photograph, using machine learning. Take a look at this high-res comparison of original and generated images, also demonstration animations and downloadable videos (with executables). [via /. see also: a little on human 3d perception at everything2, groovy dragon illusion]
posted by MetaMonkey on Jun 14, 2006 - 42 comments

Masters of Deception

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. enjoy.
posted by hortense on Aug 19, 2005 - 3 comments

Ecrans Transparents: 'transparent' Mac screens. An homage to Magritte.

The Human Condition. A Mac-based homage to Magritte. [via]
posted by Slithy_Tove on Mar 29, 2005 - 20 comments

Brain tricks

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

May I have some Moire, please?

Remember the weirdness with Bush's hypnotic rainbow tie last week? Now you too can experiment with creating mesmerizing patterns on Project LITE's Moire page.
[via j-walk blog]
posted by moonbird on Apr 19, 2004 - 5 comments

McGurk

The McGurk Effect
posted by knutmo on Apr 16, 2004 - 38 comments

FreakyFace

The Thatcher Illusion (using Madonna), the original, Bush
posted by srboisvert on Mar 21, 2004 - 25 comments

You think it's moving but it's not.

You think it's moving but it's not.
posted by xmutex on Jul 24, 2003 - 85 comments

Page: 1