Using his training as a scientist in his work as an artist, Carsten Höller's primary concerns relate to the nature of human perception and self-exploration. He has undertaken many projects that invite viewer participation and interaction while questioning human behavior, perception, and logic. His ââ¬Ålaboratory of doubt,ââ¬Â embodied in objects ranging from carousels and slippery slides to upside-down goggles, often contains playful, hallucinatory or darkly humorous overtones in order to provoke experience and reflection. With his photographic prints of Ferris Wheels, merry-go-rounds, and roller coasters where the colors have been 'displaced' so as to create images that refuse to register; or his "flicker films" shot from multiple perspectives and projected sequentially to create a sense of movement; or a crop of magic mushrooms hanging upside-down from the ceiling, Höller aims to disorient and by doing so, stimulate precognitive moments of pure sensation.