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The brain and illusions
What can illusions teach us about the brain?
Curated by Gerald Carey
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How to fool your sense of touch with sound - YouTube

Full story: bit.ly/NSsoundFX Want to feel instantly lively, slimmer, or more motivated? Try tweaking the noises your body makes.
Gerald Carey's insight:

A hands-on demonstration showing how to fool your brain into thinking that the finger is running along different surfaces.

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This Is Your Brain on 3-D | Brain Games

This Is Your Brain on 3-D | Brain Games | The brain and illusions | Scoop.it
Optical illusions reveal the mechanics of our mind.
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National Geographic site on Illusions.  Includes a number of interactive elements.

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Cool optical illusions

Cool optical illusions | The brain and illusions | Scoop.it
Collection of cool optical illusions. These optical illusions will let you experience what it is like to be tricked by your own eyes.

BizarBin is a place with plenty of illusions and they claim to explain them all so this could be a good resource.

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Visual illusions | Macknik Lab

Visual illusions | Macknik Lab | The brain and illusions | Scoop.it

Visual illusions including: unfilled flicker, standing wave of invisibility, the dichoptic standing wave and the Stoper-Mansfield effect. These are flash-based, interactives.

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50 Optical Illusions

50 Optical Illusions | The brain and illusions | Scoop.it
Enjoy 50 Optical Illusions online game for free and play other Artistic free games. Fun game when you just want to sit back and get tripped out :P It's not our fault if you start going crazy by the 50th optical illusion!
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Painting with Time iPad App Released - Sacramento Bee

Painting with Time iPad App Released

"Static is an illusion – everything is changing all the time and on many timescales – our bodies, our cities, our world.

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physics.org | Explore | Auditory illusion

You are all familiar with the idea of an optical illusion: something that tricks your eyes. The animation below will run an auditory illusion: something that tricks your ears.

(Note: needs Shockwave and did not work as at 1/1/2012 because I could not turn up the volume in the interactive - however I wanted to add it to the collection in the hope that sometime in the future it might work!).

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RACE - The Power of an Illusion | PBS

RACE - The Power of an Illusion | PBS | The brain and illusions | Scoop.it

How valid are your beliefs about the human spirit?

(PBS site to accompany the documentary).

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Menu of illusions

Menu of illusions | The brain and illusions | Scoop.it

A variety of interactive illusions. The good thing about them is that you can move the objects in the illusion to show how it is an illusion. For example, in the illustrated illusion (the Ponzo illusion) you would be able to move the green lines to show they are the same length.  There are eight illusions to choose from.

(Here is the link if the title does not work: http://www.dls.ym.edu.tw/neuroscience/flash/nill.swf)

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The Illusion of Movement

Interactive page showing some good examples of illusions and what they mean.

(Go here: http://www.movingimage.us/sprockets/illusion.swf if the title link does not work).

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JST Virtual Science Center | Mind Lab

Gerald Carey's insight:

Really good online lab that uses illusions (amongst other things) to explore consciousness.

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Wolfram Demonstrations Project

Wolfram Demonstrations Project | The brain and illusions | Scoop.it

The orange circles are exactly the same size. This illusion is due to the psychologist Edward Bradford Titchener. If two circles are surrounded by other circles, the one with larger surrounding circles will appear smaller.

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Search Results - optical illusions - Wolfram Demonstrations Project

Search Results - optical illusions - Wolfram Demonstrations Project | The brain and illusions | Scoop.it

A series of interactive illusions from Wolfram Alpha.

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Peter van der Helm: Kaleidoscopic motion and velocity illusions

Peter van der Helm: Kaleidoscopic motion and velocity illusions | The brain and illusions | Scoop.it

The illusions presented here occur in stimuli with the following layout:

Between stationary starlike inner and outer shapes, a starlike wheel rotates with constant velocity about its own center. It rotates partly behind the inner shape and partly in front of the outer shape, but at regular intervals, it precisely fills the space between the stationary shapes. At these moments, various motion and velocity illusions occur, for both the rotating wheel and the inner stationary shape

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Test Your Brain With Brain Teasers and Games | SharpBrains

Test Your Brain With Brain Teasers and Games | SharpBrains | The brain and illusions | Scoop.it
Brain teaser puzzles for attention, memory, planning, visual, logic, corporate, math, and more...
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Lotto Lab : Illusions

Lotto Lab : Illusions | The brain and illusions | Scoop.it

Much of our research is focused on understanding how and why we see illusions, since to understand how we see correctly, we need to understand why it seems that we sometimes see incorrectly. Illusions, therefore, are critical windows into the mind.

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physics.org | Explore | Disappearing Act

Nice interactive animation showing motion detection in our eyes.

From the website: "Click the "animate shape" box to start or stop a shape's movement across the colored background. You can also move a shape by clicking and dragging.

What do you see when you stop the shape inside the colored background? What if it's only partially inside?

Experiment with different shapes and backgrounds, starting and stopping in different places."

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Our Outer Ear: how is sound transformed so we can hear it?

Not an illusion but good background activities to help us understand how we hear sound and therefore how we could make sound illusions.

Includes how to make an eardrum!

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“Stepping feet” Illusion

Demonstration of 'Stepping feet'. Nice interactive illusion with four levels of explanation. Nothing is ever clear-cut in psychology!

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Interactive Movie - Illusions contest: Six ways to see two curves - New Scientist

A simple animated graphic can send your brain into a flurry of interpretation.

(An interactive illusion with lots of options but no explanation!)

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Spiral Illusion

Spiral Illusion | The brain and illusions | Scoop.it

Very nice interactive using the spiral illusion. Would work really well with Interactive White Board.

(Go here: http://www.digitalxpression.co.uk/dwheel.swf if the title does not work)

 

Explanation: "In the 1970's, a number of Psychologists were actively studying the phenomenon. See "The Perception of Moving Targets" by Robert Sekuler and Eugene Levinson, Scientific American, January 1977, page 60. This article gives a physiological explanation: The brain has separate motion detectors for different directions of motion. The motion detectors produce a stronger signal when there is motion and a weaker (but non-zero) signal when there is no motion. As long as all the motion-detectors are in balance with each other, you do not perceive any motion. When strongly stimulated by motion in a particular direction, the subset of motion detectors that respond to that motion become fatigued. When the stimulus is removed, the motion detectors for the opposite direction produce a stronger signal for a few seconds, until the fatigued motion detectors recover. This is thought to be the source of the motion aftereffect."

Source: http://dogfeathers.com/java/spirals.html

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