PROFOUNDLY DEEP TRANCE
Using the Waking Method, Sleeping Method, Narco Hypnosis or the like; this level of induction is best described as being in a continuum of Levels 29 thru 30. This is indeed a lofty goal for an individual to experience! It has been found, however, that as much as 10- 15% of individuals are highly responsive to Hypnosis and are therefore capable of the suggested experiences of Negative Hallucinations, (produced selectively in Profoundly Deep Trance States).
In addition to other sensibility disturbances, this level of Trance can produce Negative Hallucinations in Audition. The subject is capable of manifesting deafness to selected words, numbers, sounds, or complete deafness to all forms of aural stimulation. 
In cases of visual disturbances, this phenomenon is the denial (by hypnotic suggestion), of the reality of some sensory impression such as an inability to recognize the presence of a particular person in the room. Such phenomena represents a Profoundly Deep Level of Hypnosis and is carried out, of course, with the eyes open and the subject in a Trance State which to the casual observer may appear to be the behavior of a normal, and wide awake person. 
The following is an example of a
Negative Hallucination:
"The Broken Watch !"

The Profoundly Hypnotized person at this level of Trance, is told that when the eyes are open, a broken watch will be seen, with the (long) minute hand operating, but the (shorter) hour hand missing.
In the normal waking state, the working memory would keep the subsequent event in order. That is, I am about to be confronted with a broken watch. This does seem to occur, in the Profoundly Hypnotized subject, when he opens his eyes, - seeing a defective watch, with the hour hand not perceived because it is negatively hallucinated. However, the meaning of the absent hour hand as the sign of a defective watch may be ignored because of a failure of the continuity of the working memory.
When asked to tell the time, the subject may ignore the context entirely, and react as if the watch is not defective but has the hour hand concealed beneath the minute hand. Hence, although the watch may read 11:10, it is read as though the time is 2:10, the reading determined by the perceived minute hand.
The subject has not lost that aspect of memory which includes the residues of earlier experience, for the information from the past that the watch was to appear defective has been retained. This information is dissociated, however, from the working memory, and the subject acts on the information given by the watch as now perceived, independent of the source of the perception. The crucial correctives against distortion that working memory ordinarily provides are missing! 