This section is from the book "Handbook Of Suggestive Therapeutics, Applied Hypnotism, Psychic Science", by Henry S. Munro. Also available from Amazon: Handbook of Suggestive Therapeutics, Applied Hypnotism, Psychic Science.
Memory is the result of sense impressions that previous experiences in life have left upon the brain cells. The very ideas or products of thought which are impressed upon the brain cells by suggestion in the hypnotic state, as well as by suggestion without hypnotism, have the power of being reproduced in mental states, which gives rise to a new consciousness in the individual.
By suggestion in the hypnotic state we are better enabled to plant sense impressions, ideas, thoughts, and feelings, which reproduce themselves in the consciousness of the individual and furnish a foundation for his intellectual activities.
In this suggestible condition we are enabled to drive back certain sense impressions that create unpleasant mental states, obliterate them and wipe them out, and, by holding the subject's attention to certain ideas presented to him, we create a new consciousness or alter his frame of mind. We render the individual more self-conscious of potentialities, dormant and unused within him, which he can call into operation through the combined effort of memory and will, in contrast to previous conceptions of his own personality. This new conception of himself and his relation to the outer world contributes to strengthen and develop the self-conscious ego. It is in reality the development of the ego.
By suggestion in the hypnotic state we give impulse to reproduce previous sense impressions. Call it strengthening memory, or will, or character, or ego, as you choose, and the mental process which brings about the logical connection of sense perceptions or ideas reproduced in this way is what is called thinking.
So, then, by suggestion in the hypnotic state we create new thought habits, mental states, or streams of consciousness, which react upon every bodily function. We alter the individual's thinking.
The following cases will illustrate the position taken by the author as to the value of suggestion in that condition of induced passivity or receptivity to suggestion commonly referred to as the hypnotic state. Whether the individual is asleep or not does not concern us here. It suffices if we have the confidence and cooperation of the patient.
The results obtained by hypnotic suggestion in the following speak for themselves. I shall cite only enough cases to illustrate the position taken by the author in the preceding pages.