 It is meant to be looked at through closed eyelids, upon which moving yantra-like mandala visual patterns emerge, and an alpha wave mental state is induced.The frequency of the pulsations correspond to the electrical oscillations normally present in the human brain while relaxing.In 1996, the "Los Angeles Times" deemed David Woodard's iteration of the Dreamachine "the most interesting object" in Burroughs' major visual retrospective "Ports of Entry" at LACMA.