Dictionaries define < hyp-no-sis > as: An induced sleeplike state in which the subject readily accepts the hypnotist's suggestions. Hypnosis, a derivative of the Greek word "hypno" meaning "sleep", is a "sleep-like" state and not sleep itself. Everybody has been in various hypnotic states many times without notice because it seemed natural. Hypnotic states are normal for humans and animals and people frequently lapse into a hypnotic state, triggered anytime a person remembers a sequence of events.
Hypnosis is associated with hyper suggestibility; the subject accepts suggestions at deep levels of consciousness. Anyone is hypnotized as the common link between most situations of hyper suggestibility appears to be a narrow selective focus of attention resulting from such diverse conditions as sensory isolation, relaxed attentiveness or extreme fear. There does not appear to be a single common EEG pattern in hyper suggestibility, which could point out hypnotized individuals, though there are hints of unique evoked potential responses. Many do not recognize the state of hypnosis because they expect to become unconscious. But unless you achieve deep somnambulistic levels, this is not likely to occur. Language itself is infected with the unconscious to the point where language is a collective dream.