http://www.bermangraphics.com/press/patterson.htm - Interview with Freeman Patterson, a little theory on multiple exposures

http://theyesmenfixtheworld.com/guide/Using_What_You_Learned_To_Complete_Your_Project_Plan

Gallery of Op Art

http://www.op-art.co.uk/op-art-gallery/

Visual illusions and neurobiology

http://cnl.salk.edu/~eagleman/papers/Eagleman.NatureRevNeuro.Illusions.pdf

The Neuroscience of Illusion

How tricking the eye reveals the inner workings of the brain

http://www.scientificamerican.com/article.cfm?id=the-neuroscience-of-illusion

Art as Visual Research: 12 Examples of Kinetic Illusions in Op Art

Art and neuroscience combine in creating fascinating examples of illusory motion

http://www.scientificamerican.com/article.cfm?id=art-as-visual-research

Op Art

A blog with some brief notes on types of optical illusions -

http://ssubzzero.multiply.com/journal?&=&page_start=260

From tate under 'Op Art'

http://www.tate.org.uk/collections/glossary/definition.jsp?entryId=206

A major development in the 1960s of painting that created optical effects for the spectator. These effects ranged from the subtle, to the disturbing and disorienting. Op painting used a framework of purely geometric forms as the basis for its effects and also drew on colour theory and the physiology and psychology of perception. Leading figures were Bridget Riley,Jesus Raphael Soto, and Victor Vasarely. Vasarely was one of the originators of Op art. Soto's work often involves mobile elements and points up the close connection between Kinetic and Op art.