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Changes in sensory thresholds and pain thresholds will be measured with quantitative sensory testing (QST) before and during hypnotic relaxation in healthy volunteers. Hypnotic susceptibility will be assessed before QST.
QST data before and during hypnosis will be compared. Observed sensory changes will be evaluated in relation to the assessed hypnotic susceptibility
Healthy volunteers will be recruited and tested regarding their hypnotic susceptibility with Harvard Group Scale. In a second session QST will be performed on the right hand.Then hypnosis will be induced with the fixation method. After that the hypnotherapist will ask them to focus their attention on imagining an individual situation of well-being and calmness the volunteers had described before hypnosis. Then QST will be performed a second time on the same location. Results be compared using student's ttest.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Hypnosis | Other | hypnotic induction followed by relaxation and pleasant imagery |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Hypnosis | Procedure | hypnotic Relaxation without specific analgesic suggestion |
|
| Measure | Description | Time Frame |
|---|---|---|
| Changes in Quantitative Sensory Testing | Quantitative Sensory Testing, in detail the following thresholds are included in the testing: Thermal thresholds Cold detection threshold, CDT (°C from baseline 32°C) Warm detection threshold, WDT (°C from baseline 32°C) Thermal sensory limen, TSL (°C) Paradox heat sensation, PHS (x/3) Cold pain threshold, CPT (°C) Heat pain threshold, HPT (°C) Mechanical detection threshold, MDT (mN) Mechanical pain threshold, MPT (mN) Mechanical pain sensitivity, (MPS) Dynamic mechanical allodynia, (DMA) Wind-up, (WUR) Vibration detection threshold, (VDT) (x/8) Pressure pain threshold, (PPT; Pa) | 1 hour |
| Measure | Description | Time Frame |
|---|---|---|
| Observed sensory changes during hypnosis compared to hypnotic susceptibility | The correlation between the obeserved changes as described above and the degree of hypnotic susceptibility | 1 hour |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Dominik Irnich, Pd Dr. med. | Multidisciplinary Pain Centre, Department of Anesthesiology, University of Munich | Principal Investigator |
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| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 25511129 | Derived | Kramer S, Zims R, Simang M, Ruger L, Irnich D. Hypnotic relaxation results in elevated thresholds of sensory detection but not of pain detection. BMC Complement Altern Med. 2014 Dec 15;14:496. doi: 10.1186/1472-6882-14-496. |
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| ID | Term |
|---|---|
| D006990 | Hypnosis |
| ID | Term |
|---|---|
| D026441 | Mind-Body Therapies |
| D000529 | Complementary Therapies |
| D013812 | Therapeutics |
| D011613 | Psychotherapy |
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| D004191 |
| Behavioral Disciplines and Activities |