The neural neutralizer was essentially a beam emitter, a round orange lens that was located in a treatment room, above a chair in which the patient sat. A windowed alcove, connected to the room, housed a control panel, which was used for manually operating the device, and space for the therapist, who could view the patient through the window. The neural neutralizer was somewhat effective as a means of implanting suggestions. It created in the patient a profound sense of loneliness, also described as an "emptiness". Anything said to the patient while he was in this state would become his own thoughts. The effectiveness varied according to the complexity of the suggestion, the number of times it had been repeated, the volume of the beam, the strength of the patient's will, and the degree to which the suggestion was opposed by his own desires. Long term or repeated exposure could produce profound mental illness and synaptic damage. Additionally, the "emptying" effect could be immediately lethal.