규칙적인 리듬의 청각 자극이 사회불안 감소에 미치는 효과
The Effect of Auditory Stimulation with Metronomic Beat on Social Anxiety Reduction
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초록
본 연구는 규칙적인 리듬의 청각자극이 사회불안 감소에 효과가 있는지를 알아보고자 하였다. 이를 위해 ‘높은 사회불안 집단’ 22명과 ‘낮은 사회불안 집단’ 20명을 선별한 뒤, 각 집단 내에서 실험군과 통제군을 같은 수로 무선할당 하였다. 구조화된 불안 유도 과제인 TSST-G를 사용하여 불안을 유도한 이후, 실험군에만 5분 간 30bpm 의 메트로놈 자극을 들려주었다. 생리적 증상을 측정하기 위해 실험의 처음부터 끝까지 초 단위로 심장 박동수를 측정하는 기기를 착용하였으며, 각 과제 수행 구간별 심장 박동수 평균을 구하였다. 또한 과제 수행 구간마다 불안과 긴장, 회피감에 대해 100점 만점으로 평정하도록 하였고, 암산 이후, 자극제시/휴식 후, 디브리핑 이후의 세 구간에서는 사후반추사고를 측정하였다. 심장 박동수의 기저선과 사전 평가에서 실시한 발표불안 점수를 공변 량으로 두고 심장 박동수 평균에 대해 반복 측정 공분산 분석을 실시한 결과, 실험군의 심장 박동수가 통계적으로 유의미한 수준으로 안정된 것으로 나타났으며 이러한 효과는 낮은 불안수준 집단에서만 유의하게 나타났다. 결론 적으로 본 연구는 비침습적이고 주변에서 쉽게 구할 수 있는 자극을 이용해 사회 불안을 감소시킬 수 있다는 점에서 의의가 있다.
Abstract
This study was designed to see if the auditory stimulation with metronomic beat were effective in reducing social anxiety. 22 high social anxiety group and 20 low social anxiety groups were selected. 11 assigned test/high social anxiety group, 11 assigned control/high social anxiety group, 10 assigned test/low social anxiety group, 10 assigned control/low social anxiety group. After using the structured anxiety induction task, TSST-G, a 30-bpm metronomic stimulation was given to the test group only for 5 minutes. To measure physiological symptoms, the heart rate was measured every second of the experiment from beginning to the end of the experiment, and the heart rate average was calculated for each section of the task. In addition, anxiety, tension, and avoidance were rated at 100 out of every section interval, and post-event rumination were measured in three sections(after mental arithmetic, stimulation/resting, debriefing). As a result of repeated measures analysis of covariance for the heart rate average, the heart rate of the test group was found to be stable at a statistically significant level, and this effect was significant only in the low anxiety group. Also, the longer the subjects listened to the metronomic beat, the effect was clearer. At this time, the baseline of the heart rate and the speech anxiety scale performed in the pre-evaluation were set as covariate. In conclusion, this study is significant in that it can reduce social anxiety using non-invasive and easily available stimuli.
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