Electrosleep, Hypnosis and Auditory Evoked Potentials to Words, A New Psychological Approach
Electrosleep was used to induce a state of mental relaxation in chronic anxious and mental retarded subjects and to accelerate induction of hypnosis associated to instructions recorded on tape. Previously, Chavez-Ibarra demonstrated that Auditory Evoked Potentials to words (AEP) has two main components in a second sweep. The first component is related to theauditory pathway while the second component reflects cognition, expectancy and emotional content associated with the words used as acoustic stimulus. Both components of the AEP increase according with the complexity of mental tasks performed while the subject was listening the word and diminish with distraction. Subjects listened forty words, each repeated forty times, and performed two different mental tasks: passive listening of the word and writing an associated word with each repetition. Bipolar recording was taken from the right and left frontal-vertex and left frontal-vertex and mastoid-vertex leads. AEP were obtained with an Enhancetron computer. AEP showed individual variations and its amplitude was in accordance with the associated words written out, which reflected subject’s previous experience and emotional content related to each word used as stimulus. Associated words revealed the subject’s emotional distrubance and suggests a relation with his abnormal behavior. Patients were clinically treated under electrosleep or hypnosis.