Two streams of equal value and under the same control. Examples: The pianist and the motor-car driver. A normal phenomenon, but linked to the next class by cases of absent-mindedness.
Two streams, one being the ordinary stream of consciousness and the other a stream not under the control of the main personality, which is concerned only with the ordinary stream. Examples: automatic writing, water-divining and hysteria (see Chapter VIII). Continuous dissociation.
A continuous dissociation with a sudden irruption of the dissociated into the main stream, completely replacing it for a period. Examples: The case of the ex-soldier and those of double personality; also somnambulisms and spiritualist trances. Abrupt dissociation.