The earliest definition of hypnosis was given by Braid, who coined the term "hypnotism" as an abbreviation for "neuro-hypnotism", or nervous sleep, which he opposed to normal sleep, and defined as:

a peculiar condition of the nervous system, induced by a fixed and abstracted attention of the mental and visual eye, on one object, not of an exciting nature.[6]

Braid elaborated upon this brief definition in a later work,

[...] the real origin and essence of the hypnotic condition, is the indu...


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