不安の精神生理学的研究 : 鏡映描写中のMicrovibrationの変化

概要

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Anxiety is one of the most important problems in the field of psychiatry and psychosomatic medicine. Anxiety has two main aspects by its nature : trait anxienty and state anxiety. Sometimes it is very difficult to induce anxiety experimentally. The mirror drawing test (MDT) has been considered very suitable to induce the anxiety state experimentally. The authors studied the psychophysiological change during mirror drawing test by using microvibration (MV) as a measurement.Subjects were 7 male normal students. An MV pick-up was placed on the left thenar. MDT was carried out three and each trial was continued for 1 minute which was followed by 1 minute's rest. MV was analyzed by the band analyzer to 5 bands : δ(2-4 Hz), θ(4-7 Hz), α(7-13 Hz), β_1(13-20 Hz), β_2(20-30 Hz). The energy percentage of each band was calculated. The results were as follows : 1. During the instruction of the MDT, α-band decreased and θ-band slightly increased. 2. During the MDT, α-band significantly decreased and β_1-band significantly increased, but θ-band showed no change. 3. After the MDT, the subjects were ordered to grasp their right hand to search for the influence of the right hand, but MV showed no change during grasping.From these results, it was supposed that the instruction induced anxiety, while the MDT rather facilitated the tension state.
日本心身医学会の論文
1975-06-01