시청각 동영상에 의해 유발된 부정적 감성에 따른 자율신경계 반응
ANS responses in Negative Emotions Induced by Audio-visual Film Clips
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초록
감성은 인간의 생존에 기여한다는 점에서 중요한 기능을 한다. 본 연구에서는 시청각 동영상자극을 이용하여 부정적 감성을 유발하고 각 부정적 감성에 따른 자율신경계 반응을 구분하고자 하였다. 실험에는 성인 남녀 30명(22.6세±1.24, 남: 15명, 여: 15명)이 참여하였다. 예비실험을 통해 2분 길이의 동영상 자극을 실험자극으로 선정하였다. 실험참여자가 선정된 동영상자극을 시청하는 동안 피부전기활동(EDA), 심전도(ECG)가 측정되었고, 하나의 자극제시가 끝난 후에 실험참여자들에게 각 감성자극에 의해 경험되는 감성에 대한 심리평가를 실시하였다. 심리반응 분석결과, 각 부정적 감성 자극은 표적감성을 적절하고 효과적으로 유발하는 것으로 나타났다. 자율신경계 반응분석결과, 각각의 감성자극들은 서로 구분되는 자율신경계 활동패턴을 유발하였다. 그리고 공포자극은 다른 유형의 부정적 감성자극보다 피부전기활동과 심전도의 지표들에서 높은 교감신경계의 활성화를 유발하였다. 본 연구는 각 부정적 감성에 대한 자율신경계 반응을 세분화하였다는 데 의의가 있다.
Abstract
Negative emotions play an important function as to humans existence. In this research, we employed the audio-visual film clips to induce negative emotions and examined the classified responses in the autonomic nervous system(ANS) due to each negative emotion.30 adults(22.6 years old±1.24, 15 males and 15 females) took part in this experiment. Through the preliminary experiment, 2 minutes films stimuli were selected as the emotion-induced stimuli. During the period when participants were viewing and listening to the selected movie, EDA and ECG were examined as soon as one stimulus was displayed, participants were tested by completing the psychological appraisals of their experienced emotion due to each emotional stimulus. With regard to the result of analyzing the psychological responses, each negative emotion appropriately and effectively induced its target emotion. While concerning the result of analyzing ANS responses, each negative emotion induced its respective activation in ANS. What is more, compared with other types of negative emotional stimuli, the scaring stimulus induced higher activation of the sympathetic nervour system(SNS) as to the indexes in EDA and ECG. This research made segmentation of ANS responses to each negative emotion, which has its significance.
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