The show and catalogue (which has been published by Abrams)are rightfully subtitled "The Art of Perception."

Art in The Doors of Perception by Aldous Huxley - in pictures 4.

"It's part of a standard psychological battery given to people as a screening tool," said Dr. Gieser, whose book "Evocative Images: The Thematic Apperception Test and the Art of Perception" was published in 1999.