1. A system for measuring human perception at edges of awareness comprising: a message transmitter providing embedded pre-semantic messages having a predetermined meaning or a predetermined object representation for visual priming, the messages being embedded within supraliminal information; a sensory monitor for measuring reaction in an individual to the predetermined meaning or predetermined object representation of the embedded pre-semantic messages; and a control system connected to the message transmitter, the control system receiving an input from the sensory monitor, the control system including a real-time feedback control loop altering a perceptability of the embedded pre-semantic messages with respect to the supraliminal messages as a function of the sensory monitor input.