Building on research by Diana Deutsch, Alfred Bregman, Maryanne Amacher and others, The Sick Sense is an ongoing project exploring the limits of the perceptual system. These projects stimulate otoacoustic and flicker phenomena, auditory and visual hallucinations, and other effects while searching for stimulus patterns that turn off the brain’s default mode network and other rational systems, switching the brain into the role of pure ecstatic perceiver.