At the 1992 MIT Conference on abductions, Mark Rodeghier proposed the following definition of abductees: To qualify as an abductee, a person must be taken against his or her will, from terrestrial surroundings, by non-human beings. These beings must take a person to an enclosed place, non-terrestrial in appearance, that is assumed or known to be a spacecraft by the witness. In this place, the person must either be subjected to a physical examination, engaged in communication, verbal or telepathic, or both. These experiences may be remembered consciously or through methods of focused concentration, such as hypnosis. Source: C.D.B. Bryan, Close Encounters of the Fourth Kind.