n.1.(Physiol.) An instrument for ascertaining the susceptibility of a person to hypnotic influences.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
A practical invention for which Ochorowicz became well-known, and on which he relied to a great extent, was the hypnoscope, an instrument designed to reveal people's susceptibility to hypnosis when they placed a finger inside a cylindrical magnet, which was supposed to produce sensations indicative of their hypnotizability.
A new hypnoscope. Journal of the Society for Psychical Research, 13, 287-282.
The defense argued that the police had used "hypnotic techniques" and that Ivens had "temporarily come to accept their assertions as his own memories." It was later argued that Ivens had been put in a suggestible state by an accidental flash of light off of the barrel of a gun, mimicking a "mirror hypnotizer" or "hypnoscope."