PSYCHOBOTANY proudly supported by: Revolutionary Breakthroughs in Human/Plant Communication MACHINE PROJECT & The CENTER for TACTICAL MAGIC   Cleve Backster       Documentation of Cleve Backster's work included reprints of two of Backster's polygraph charts along with a photo of a plant being tested. The shelf below contains a plant, a psychogalvanometer, and Cleve Backster's book, Primary Perception. The monitor screened Backster's interview/segment from the film, The Secret Life of Plants.