title: Hypnotic suggestion alters the state of the motor cortex.
abstract: Hypnosis often leads people to obey a suggestion of movement and to lose perceived voluntariness. This inexplicable phenomenon suggests that the state of the motor system may be altered by hypnosis; however, objective evidence for this is still lacking. Thus, we used transcranial magnetic stimulation of the primary motor cortex (M1) to investigate how hypnosis, and a concurrent suggestion that increased motivation for a force exertion task, influenced the state of the motor system. As a result, corticospinal excitability was enhanced, producing increased force exertion, only when the task-motivating suggestion was provided during hypnotic induction, showing that the hypnotic suggestion actually altered the state of M1 and the resultant behavior.
authors: Faculty of Sports Sciences, Waseda University, Saitama 359-1192, Japan. Electronic address: takarada@waseda.jp.
authors: Yudai
authors: Y
authors: Takarada
authors: Graduate School of Education, The University of Tokyo, Tokyo 113-0033, Japan.
authors: Daichi
authors: D
authors: Nozaki
mesh_terms: D019054:Evoked Potentials, Motor / Q000502:physiology*; D005260:Female; D006801:Humans; D006990:Hypnosis; D008297:Male; D009044:Motor Cortex / Q000502:physiology*; D050781:Transcranial Magnetic Stimulation; D055815:Young Adult
keywords: Hypnosis; Primary motor cortex; Suggestion; TMS