..before being hypnotized, she could not distinguish the capitals in the advertising columns of a newspaper. After being hypnotized, however, she cou… - James Braid

Some individuals may themselves be deceived by the compelling words of other individuals, but a much more significant number fall into the same state after being hypnotised by continuous eye-fixation upon an object and concentration of mind. This state can even be established before the eyelids are closed or a pronounced tendency to sleep has been felt. Suggestibility can also be increased by the sight of other patients in the experiment, and that by virtue of the laws of sympathy and imitation.

There is, therefore, both positive and negative proof in favour of my mental and suggestive theory, and in opposition to the magnetic, occult, or electric theories of the Mesmerists and electro-biologists. My theory, moreover, has this additional recommendation, that it is level to our comprehension, and adequate to account for all which is demonstrably true, without offering any violence to reason and common sense, or being at variance with generally admitted physiological and psychological principles.

...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.