Changes in Sensory Perception During Hypnotic Relaxation

Not Applicable

Completed

• Conditions: Healthy
• Interventions: Procedure: Hypnosis

• Registration Number: NCT02261155
• Lead Sponsor: Ludwig-Maximilians - University of Munich

Brief Summary

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

Detailed Description

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.

Study Timeline

• Study Start: 2006-09
• Primary Completion: 2007-08
• Study Completion: 2007-08
• Study First Submitted: 2014-09-25
• Status Verified: 2014-10
• Study First Submitted QC: 2014-10-06
• Last Update Submitted: 2014-10-06
• Study First Posted: 2014-10-10
• Last Update Posted: 2014-10-10

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Not specified
• Target Recruitment: 23

Inclusion Criteria

• healthy volunteers

Exclusion Criteria

• health conditions of any Kind
• inability to read and/ or sign informed consent
• previous hypnosis experience

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Hypnosis	Hypnosis	hypnotic induction followed by relaxation and pleasant imagery

Primary Outcome Measures

Name	Time	Method
Changes in Quantitative Sensory Testing	1 hour	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)

Secondary Outcome Measures

Name	Time	Method
Observed sensory changes during hypnosis compared to hypnotic susceptibility	1 hour	The correlation between the obeserved changes as described above and the degree of hypnotic susceptibility