Abstract: A medical hypnosis device (20) for controlling the administration of a hypnosis experience to a user is described. The device comprises a stimulus output module (24) for outputting a first type of content via one or more media channels to a sensory output device (28a, 28b) for presentation to the user and a sensor data receiver (26) for receiving physiological feedback data from a sensor (32a, 32b, 32c) sensing a physiological parameter of the user. The device also comprises a processor (22) for comparing the received physiological feedback data with predetermined physiological data to detect a change in a neurological state of the user. The processor is arranged, on detection of such a change, to trigger the provision of a second type of content to the user via the stimulus output module.