An interventional study of Hypnosis session and Catalepsy in Hypnosis, sponsored by CMC Ambroise Paré. Completed at 1 site in France. Open to participants aged 18 Years to 75 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-04-08.
Sponsored by CMC Ambroise Paré · Not applicable, Interventional, and Other
Catalepsy seems to facilitate hypnotic induction and deepen hypnotic trance, although no work confirms the usefulness of this technique which is in common use in hypnosis. Furthermore, it has been shown that the hypnotic trance state is accompanied by an increase in parasympathetic tone, the non-invasive measurement of which is easy by the ANI monitor (Analgesia Nociception Index).
The research hypothesis is that, by adding a body dissociation, catalepsy could facilitate and intensify the hypnotic trance, the intensity of which can be monitored and is proportional to the parasympathetic tone.
After randomization, subjects will either benefit from the normal hypnotic trance, or from the hypnotic trance associated with catalepsy of the hand.
T0 = installation in a sitting position and collection of an accompanying theme T1 = induction of the hypnotic trance (closing eyes) with restitution of the theme to the patient and suggestion of comfort over a period of 5 to 10 min T2 = validation of comfort by a pre-established signal T3 = return to consciousness (opening eyes) T4 = end of questionnaire about absorption, dissociation and time perception
41 studies on the registry are indexed under Dissociative Disorders; 13 are open to participants now.
This study's enrollment of 90 is above the median of 50 across 34 interventional studies indexed under Dissociative Disorders.
Browse Dissociative Disorders studies →CMC Ambroise Paré is the lead sponsor of 47 studies on the registry; 8 are open to participants now.
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Exclusion Criteria:
Hypnosis session of comfort for 20 minutes
Procedure: Hypnosis session
Catalepsy + Hypnosis session of comfort for 20 minutes
Procedure: Hypnosis session · Other: Catalepsy
Comfort hypnosis: accompaniment of a pleasant memory.
Catalepsy of the hand.
Parasympathetic tone
Analgesia Nociception Index (ANI)
Time frame: 30 minutes
Absorption
Numeric scale from 0 to 10 (0=not at all, 10=completely)
Time frame: 30 minutes
Dissociation
Numeric scale from 0 to 10 (0=completely in the reality, 10=completely disconnected from reality)
Time frame: 30 minutes
Time perception (minute)
Difference between the time of hypnosis session estimated by the patient and the actual time of hypnosis session (from closing to opening the eyes).
Time frame: 30 minutes
Variation of Heart Rate (beat per minute)
Heart rate measured by a pulse oximeter
Time frame: 30 minutes
Variation of Respiratory Rate (breath per minute)
Respiratory rate assessed by the investigator
Time frame: 30 minutes
Ran from May 2022 to primary completion in May 2022, 0 months.
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This study is completed, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.
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CMC Ambroise Paré