Physiological responsivity to negative emotional stimuli in patients with schizophrenia

본 연구는 정상집단과 정신분열병 환자 집단의 부정적 정서자극에 대한 주관적인 정서경험 수준과 생리적 반응의 변화를 비교하는 것을 목적으로 한다. 분노, 혐오, 공포, 슬픔 및 정서를 유발하는 네 가지 부정적인 동영상 자극을 이용하여 자극이 제시되기 전과 제시되는 동안에 피부전도반응(SCR), 피부전도수준(SCL), 심박률(HR), 호흡(RESP), 추미근(CM)과 구륜근(OM)을 측정하였다. 환자집단은 정상집단에 비해 분노와 혐오 자극에 대해 낮은 강도의 주관적 정서경험을 보고 하였고, 분노정서에서 정서경험 인식의 정확률이 낮았다. 생리적인 반응의 경우 환자집단은 정상집단에 비해 분노(HR, CM), 공포(SCR, RESP, CM), 슬픔(HR, RESP)의 지표에서 낮은 수준의 생리적 변화를 보였다. 각각의 집단 내에서 안정상태와 정서 유발상태간의 생리반응을 비교하여 보면, 정상집단의 경우 분노(HR, RESP, CM), 혐오(OM), 공포(SCR, SCL, RESP, CM, OM), 및 슬픔(HR, RESP)에서 유의한 변화가 나타났고, 환자집단에서는 혐오(HR), 공포(SCR) 그리고 슬픔(RESP)에서 유의한 변화가 관찰되었다. 본 연구는 부정적인 정서 유발상황에서 정신분열병 환자의 생리적 반응은 정상인과 뚜렷하게 다른 양상을 나타내고 있지만 정서를 주관적으로 경험하는 수준은 크게 다르지 않음을 보여 주었다.

keywords: 정신분열병, 정서, 자율신경계, 정신생리, Schizophrenia, Emotion, Autonomic nervous system, Psychophysiology, Schizophrenia, Emotion, Autonomic nervous system, Psychophysiology

Abstract

The purpose of this study was to investigate the physiological reactions and subjective experiences of schizophrenic patients against negative emotional stimuli such as anger, disgust, fear, and sadness. The responses to the emotional stimuli of each subjects were assessed by measuring and analysing the physiological signals before and during presenting negative emotional movie scenes; the parameters were the heart rate (HR), respiration(RESP), skin conductance level (SCL), skin conductance response (SCR), corrugator muscle (CM), and orbicularis muscle (OM), respectively. Patients reported that they have experienced strong emotions in responses to the stimuli of disgust, fear and sadness. The identification rate of anger only was distinguishable between the patients and the controls. The changes in the physiological responses of the patients between the resting periods and emotion-induced state in anger (HR, CM), fear (SCR, RESP, CM), sadness (HR, RESP) were less significant compared to the changes in the control group. The control subjects exhibited significantly-increased values in eleven parameters; anger (HR, RESP, CM), disgust(OM), fear(SCR, SCL, RESP, CM, OM), and sadness(HR, RESP), while the patients showed significant changes only in three parameters; disgust (HR), fear (SCR), and sadness (RESP). This study show that the physiological responses in patients apparently differ from in controls while the subjective experience cannot tell the difference between the two groups.

keywords: 정신분열병, 정서, 자율신경계, 정신생리, Schizophrenia, Emotion, Autonomic nervous system, Psychophysiology, Schizophrenia, Emotion, Autonomic nervous system, Psychophysiology

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논문 상세

Vol.21 No.3

정신분열병 환자의 부정 정서 자극에 대한 생리적 반응

Physiological responsivity to negative emotional stimuli in patients with schizophrenia

초록

Abstract

참고문헌

한국심리학회지: 인지 및 생물