Information about visual metaphors

http://www.personal.psu.edu/staff/v/q/vqw/Portfolio/VislMeta.pdf

Creating effective visual metaphors
http://www.personal.psu.edu/staff/v/q/vqw/Portfolio/VislMeta.pdf

visual metaphor
http://grammar.about.com/od/tz/g/vismeterm.htm

What is a visual metaphor
http://www.answers.com/Q/What_is_a_visual_metaphor

The remarkable power of visual metaphors
http://www.fastcodesign.com/3028907/evidence/the-remarkable-power-of-visual-metaphors-to-make-us-more-creative

Visual metaphor in pinterest
http://www.pinterest.com/competia/visual-metaphors/

http://en.wikipedia.org/wiki/Hidden_message

Visual Metaphor, Cultural Knowledge, and the New Rhetoric

Robert N. St. Clair

http://jan.ucc.nau.edu/~jar/LIB/LIB8.html

ABOUT PERCEPTION
http://en.wikipedia.org/wiki/Category:Perception