it is a mental depression characterized by the disappearance of the higher functions of the mind, with the preservation and often with an exaggeration of the lower functions; it is a lowering of the mental level. So we may say, in short, that hystericals present to us the following stigmata: a depression, a lowering of the mental level, which takes the special form of a retraction of the field of consciousness.
Janet establishes retraction of the field of consciousness as the condensed, definitive formula for the hysterical mental state — the specific form taken by a general lowering of the mental level.
, The Major Symptoms of Hysteria, 1907thesis