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NTIS 바로가기Journal of biomedical engineering research : the official journal of the Korean Society of Medical & Biological Engineering, v.39 no.3, 2018년, pp.124 - 133
김현 (연세대학교 보건과학대학 의공학과) , 최종두 (연세대학교 보건과학대학 의공학과) , 최정우 (연세대학교 보건과학대학 의공학과) , 여동훈 (연세대학교 보건과학대학 의공학과) , 서부경 (연세대학교 보건과학대학 의공학과) , 허성진 (연세대학교 보건과학대학 의공학과) , 김경환 (연세대학교 보건과학대학 의공학과)
We tried to investigate the changes in cortical activities according to emotional valence states during watching video clips. We examined the neural basis of two emotional states (positive and negative) using spectral power analysis and brain functional connectivity analysis of cortical current dens...
핵심어 | 질문 | 논문에서 추출한 답변 |
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감정은 무엇인가? | 감정은 외부환경의 변화에 적응하는 데 효과적인 신체 상태를 만들기 위한 정신-생리적현상이다[1]. 감정은 비교적 짧은 시간동안 유지되며 이에 대한 신경계반응에 있어서 대뇌변연계가 중요하게 관여하는 것으로 알려져 있다[2]. | |
슬픈 영화 시청 시 어떤 영역이 강하게 활성되는가? | 한편, 주로 기능적자기공명영상을 이용하여 감정 정보처리에 관여하는 뇌 영역다수의 위치를 밝히기 위한 연구가다수 진행되었다. 슬픈 영화 시청 시 medial prefrontalcortex (mPFC), lingual gyrus, precuneus, posteriorinsula, amygdala, thalamus 등의 영역이 강하게 활성화되었으며 즐거운 영화 시청 시 dorsomedial prefrontalcortex (dmPFC), superior temporal gyrus (STG),putamen 등이 강하게 활성화된다는 사실이 밝혀졌다[13-15]. Eryilmaz 등은 부정적 감정을 유발하는 영화 시청 시mPFC와 amygdala 간 기능적 연결성이 현저히 감소하는 것을 확인하였다[15]. | |
뇌섬엽의 앞쪽 부분이 관여하는 것은 무엇인가? | 뇌섬엽의 앞쪽 부분은 감정 회상이나 내적으로 생성된 감정처리와 관련된 것으로 알려져 있다[35]. 특히 부정적인 감정자극에 노출 후 불안감을 보이는 것에 주된 관여를 하는 것으로 보이며, 불안 특성이 높은 사람에게서 과활성을 보인다[33-34]. 본 연구에서는 대상피질, 내측전전두피질, 뇌섬엽 영역에서 긍정적인 감정에 비해 부정적인 감정에서 더 강한 감마대역 파워변화량을 관찰하였으며 이는 피험자의 자가감정평가 점수와 상관관계가 있음을 확인하였다. |
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