# SOCR Interactive Optical Illusions Project

## SOCR Project - SOCR Interactive Optical Illusions Project

### Project Goals

Stare at the cross (+) in the center and you will see a series of events: One purple dot disappears; One purple dot turns green; Some/all purple dots disappear; Only the green spot remains, circling around the cross.

This project aims to design, implement and promote a set of diverse optical illusions using motion, color, shape, appearance, visual and perceptional cues, etc. The applets mush be lightweight, allow user interaction, convey interesting/unexpected visual illusions, and provide appropriate explanations for all of these visual perceptions. One example is the Pacman's illusion (right). Additional examples of such visuals are included below.

## Example

The Adelson-Checker-Shadow illusion is very interesting. The color/shade of square A is exactly the same gray shade of square B. You can see the evidence by clicking on the Show button to the right. Even after seeing the proof, your eyes may still keep deceiving you.

## Alternative Illusion Projects

There are a number of alternative mind-illusion projects similar to the optical illusions that can be initiated.

### Audio Illusions

One can use audio stimuli to convey an illusion or to capture data about sound/tone perception. Then one can investigate phenotypic effects (e.g., gender and age) on the brain processing/perception of audio signals. See Sound-Cloud.

• Examples of audio illusions are listed here. These include sound samples here are the scale illusion in which you'll hear different melodies in each ear depending on whether you're left or right-handed and the virtual barbershop, which essentially demonstrates how you hear and how the brain processes sound and its relation in space.
• A tone deafness GUI provides an interesting approach to surveying users' audio processing capabilities.
* There are 2 different types of hearing loss, sensorineural (brain) and conductive (ear).


## Optical Illusion Survey

Please complete this anonymous SOCR Optical Illusions Survey.