[Psychophysiologic research on mental imagery]

This paper studies the different types of imagery likely to occur during the sleep/wake cycle in experiment subjects under part sensory deprivation conditions, where they are administered a sound-stimulus- namely an electronically recorded heart-beat which acts as propioceptive inductor. Meanwhile, a polysmonographic register in recorded so that a correlation between the time the imagery appears, and the states of consciousness likely to arouse the images is duly established. The study allows a fresh re-elaboration to be raised as regards imagery matureness and formation in the mind, a semiologic re-statement of imagery types, and a better understanding how the self works during sleep stage, dream state, and hypnagogic-hypnopompic phases as well. Finally, the authors stress up the importance of interpersonal relationship between the subjects and the research team, altogether with the frame of reference the professionals work in since their focusing could modify the sleep recording characteristics.