PSYCHOPATHOLOGICAL RESEARCHES:
STUDIES IN MENTAL DISSOCIATION

Boris Sidis, M. A., Ph.D., M.D.
with
William A. White, M.D., George M. Parker, M.D.

© 1908
Boston: Richard G. Badger

The first tracing shows the state of the patient in normal sleep. At the very end the same tracing shows the reaction of the patient to rhythmic stimuli, such as counting. No disturbances manifested; rhythm is not followed. In the second tracing, in the part marked "counted," there is no manifestation of following the rhythm, but there is a recurrence of the deep respiration at "ten." The highly developed subconsciously formed habit is disintegrating with the process of synthesis of the dissociated subconscious systems. The rest of the tracings show the different reactions to stimuli in normal sleep and respiratory changes during different conditions of the sleeping state.