title: Elektromyographische Untersuchungen zur hypnotischen Armlevitation
title: Unterschiede zwischen willkürlichem Armheben und unwillkürlicher Armlevitation
titleType: Subtitle
Creators: name: Peter, Burkhard
name: Schiebler, Philipp
name: Piesbergen, Christoph
name: Hagl, Maria
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2012
Subjects: subject: Hypnose, Armlevitation, Willkürlichkeit, Unwillkürlichkeit, Imagination, Muskelaktivität, Elektromyographie, Hypnotisierbarkeit
subject: hypnosis, arm levitation, voluntariness, involuntariness, imagination, muscle activity, electromyography, hypnotizability
subject: 150

description: Zweck: Ziel dieser explorativen Studie war es, die Technik der hypnotischen Armlevitation auf physiologischer und subjektiver Ebene zu untersuchen. Verglichen wurden drei Bedingungen von Muskelaktivität: unwillkürlich-ideomotorische Armlevitation in Hypnose; willkürliches Halten desselben Arms in gleicher Höhe ohne Hypnose; und Imagination der Hebung des Armes ohne Hypnose und ohne diese Bewegung tatsächlich auszuführen.Methode: In einem Within-Subjekt-Design durchliefen 33 Vpn die drei jeweils dreiminütigen Bedingungen (unwillkürlich, willkürlich und imaginativ) in zufälliger Reihenfolge. Abgeleitet wurden die Aktivitäten von 6 Muskeln des rechten Arms und der rechten Schulter (Trapezius, Deltoideus, Extensor Digitorum Communis, Flexor Digitorum Profundus, Bizeps Brachii und Trizeps Brachii). Als abhängige Variablen wurde die elektrische Muskelaktivität mittels Elektromyogra -phie (EMG) und die von den Vpn empfundene Anstrengung erhoben.Resultate: Während der hypnotischen Armlevitation war die Gesamtmuskelaktivität im rechten Arm um 13% (p
description: Purpose: The aim of this pilot study was to examine the technique of the hypnotic arm levitation with subjective and physiological measures. An arm lifted and hold up unvoluntarily through ideo-motoric arm levitation in hypnosis was compared with that arm lifted and hold up voluntarily without hypnosis. In addition the subjects performed an non-hypnotic imagined arm lifting, without actually lifting it. Method: 33 psychology students underwent a within subject design with three conditions: hypnotic arm levitation, holding up the arm voluntarily without hypnosis, and imagined arm lifting without hypnosis in randomised order. Six muscles were measured simultaniously (trapecius, deltoideus, extensor digitorum communis, flexor digitorum profundus, biceps brachii and triceps brachii). Felt strain and muscle activity (electro -myography, EMG) during lifting and holding up the right arm for 3 min were used as dependent variables. Results: During hypnotic arm levitation the total muscle activity in the rightarm was 13% lower (p &lt; .008) than during holding it up voluntarily; moreover, the activity in the deltoideus was 27% lower (p &lt; .001). The hypnotic arm levitation was subjectively felt less strenuous (p &lt; .027). Without hypnosis the muscle activity showed a positive correlation with the felt strain (r = .31; p &lt; .006). However, there was no such correlation in the condition of hypnotic, involuntary arm levitation (r = .08). The muscle activity generated through non-hypnoticimagination was lower than in the other conditions but higher than base line muscle activity (p &lt; .001). No correlation was found between pre-test HGSHS:A and muscle activity. Conclusion: It is possible to reduce as well the subjectively felt strain as the objectively measured muscle activity in an uplifted arm through hypnotic arm levitation. During hypnosis the felt strain shows no correlation with the measured muscle activity.