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대인관계유형에 따른 전전두피질 활동과 정서반응

Interpersonal Style, Frontal Brain EEG Activity and Emotional Responses

한국심리학회지: 인지 및 생물 / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2010, v.22 no.4, pp.509-527
https://doi.org/10.22172/cogbio.2010.22.4.005
정봉교 (영남대학교)

초록

본 연구는 대인관계유형에 따른 전전두피질 비대칭성과 정서반응의 차이를 알아보기 위해서 수행되었다. 성인애착유형검사에 의해 실험참가자들은 안정형, 두려움형, 몰입형 및 무시형으로 분류되었고, 기저선기에서 전전두피질 비대칭성(FBA), 심박률(HR) 및 호흡공동부정맥(RSA)이 측정되었다. 그 다음으로 실험참가자들은 FBA, HR 및 RSA가 측정되고 있는 동안 60초간의 휴식 후 애착과 관련된 내용을 포함하고 있는 행복, 공포 및 슬픔 자극에 60초간 노출되었다. 기저선 측정에서 안정형은 두려움형과 무시형에 비해 유의하게 높은 좌측 중전두 활성을 나타내었고, 모든 불안정형 집단들에 비해 유의하게 높은 호흡공동부정맥(RSA)을 나타내었다. 정서자극에 대한 노출 결과를 분석하면, 안정형은 정서자극에 대해 주관적 각성의 증가, 좌측 중전두 영역의 높은 활성 및 낮은 HR과 높은 RSA를 나타내었다. 두려움형은 정서자극에 대해 주관적 각성의 증가, 높은 우측 중전두 활성, 그리고 부정적 정서자극에 대한 높은 HR과 낮은 RSA를 나타내었다. 몰입형은 정서자극에 대해 주관적 각성의 증가, 행복에 대해 높은 좌측 중전두 활성, 그리고 HR의 증가 및 RSA의 증가를 보였으나, 공포에 대해서는 반대 패턴의 FBA와 RSA를 나타내었다. 무시형은 공포에 대해 낮은 각성, 높은 좌측 중전두 활성과 낮은 HR을 나타내었다. 이 결과는 애착경험이 대인상황에서 정서조절의 개인차에 영향을 미치고, 중전두 FBA와 부교감계 활동 수준이 그 개인차의 신경생리적 기반이 될 가능성을 시사해준다.

keywords
성인애착유형, 전전두피질 비대칭성, 심박률, 호흡공동부정맥, 정서조절, attachment style, secure, fearful/avoidant, preoccupied, avoidant, FBA, HR, RSA

Abstract

This research examined the role of adult attachment style in subjective and neurophysiological aspects of human emotion. Experimental participants were classified into secure, fearful/avoidant, preoccupied and avoidant attachment style by the Relationship Questionnaire. During resting baseline, frontal brain asymmetry(FBA), heart rate(HR) and respiratory sinus arrhythmia(RSA) were recorded. After each 60 sec. rest period, self-reported emotional arousal and pleasantness, FBA, HR, and RSA were analysed while participants watched video-clips inducing happiness, fear and sadness with attachment-related content. At baseline, secure group showed higher left midfrontal activation than avoidant group and showed higher RSA than both fearful/avoidant and preoccupied groups. Secure individuals displayed higher arousal feelings, higher left midfrontal activation, lower HR and higher RSA to emotional video clips. Fearful/avoidant individuals responded to emotional stimuli with higher arousal feelings and higher right midfrontal activation and responded to negative stimuli with higher HR and lower RSA. Preoccupied individuals reported higher aroused subjective experiences to emotional stimuli and showed higher left midfrontal activation, higher HR and RSA to happiness clip, whereas opposite FBA and RSA patterns were observed in response to fear clip. Avoidant individuals responded to fear stimuli with lower arousal feelings, higher left midfrontal activation, and lower HR. These results suggest that attachment experiences could influence individual variability in emotion regulation and modulate underlying neurophysiological processes including FBA and vagal tone.

keywords
성인애착유형, 전전두피질 비대칭성, 심박률, 호흡공동부정맥, 정서조절, attachment style, secure, fearful/avoidant, preoccupied, avoidant, FBA, HR, RSA

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