*Hypnopompic.—See Hypnagogic.
Hysteria.—"A disordered condition of the nervous system, the anatomical seat and nature of which are unknown to medical science, but of which the symptoms consist in well-marked and very varied disturbances of nerve-function" (Ency. Brit.). Hysterical affections are not dependent on any discoverable lesion.
Hysterogenous zones.—Points or tracts on the skin of a hysterical person, pressure on which will induce a hysterical attack.
Ideational.—Used of impressions which display some distinct notion, but not of sensory nature.
Induced.—Of hallucinations, etc., intentionally produced.
Levitation.—A raising of objects from the ground by supposed supernormal means; especially of living persons.
Medium.—A person through whom communication is deemed to be carried on between living men and spirits of the departed. It is often better replaced by automatist or sensitive.
Message.—Used for any communication, not necessarily verbal, from one to another stratum of the automatist's personality, or from an external intelligence to the automatist's mind.
Metallæsthesia.—A form of sensibility alleged to exist which enables some hypnotised or hysterical subjects to discriminate between the contacts of various metals by sensations not derived from their ordinary properties of weight, etc.
Metastasis.—Change of the seat of a bodily function from one place (e.g., brain-centre) to another.