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뇌과학 분야 기능적 연결체학의 발전 : 외상후스트레스장애를 중심으로
Advances in Functional Connectomics in Neuroscience : A Focus on Post-Traumatic Stress Disorder 원문보기

생물정신의학 = Korean journal of biological psychiatry, v.22 no.3, 2015년, pp.101 - 108  

박신원 (이화여자대학교 심리학과) ,  정현석 (가톨릭대학교 인천성모병원 영상의학과) ,  류인균 (이화여자대학교 뇌.인지과학과, 뇌융합과학연구원)

Abstract AI-Helper 아이콘AI-Helper

Recent breakthroughs in functional neuroimaging techniques have launched the quest of mapping the connections of the human brain, otherwise known as the human connectome. Imaging connectomics is an umbrella term that refers to the neuroimaging techniques used to generate these maps, which recently h...

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문제 정의

  • 본 논문은 뇌영상을 이용한 기능적 연결체학에 초점을 맞추어 주요 개념과 연구 방법을 정리하고, 이를 적용한 PTSD 연구들을 살펴본 후, 향후 과제와 발전 방향을 제시하고자 한다.

가설 설정

  • BLA와 default mode 영역, 특히 배내측전전두엽의 강한 연결성은 외상 사건에 대한 기억과 경험에 대한 끊임없는 내적 감시와 자기-참조적인 생각을 통한 휴지기 상태에서의 불안감을 반영한다.58) Salient network(이하 SN)의 주요 영역인 dorsal ACC와의 증가된 연결성은 환경에서의 위협 관련 자극의 부재에도 불구하고 과민 반응을 하는 데 영향을 미친다.58) 반면, CMA와는 어떠한 연결성에서도 유의한 변화를 찾아볼 수 없었다.
본문요약 정보가 도움이 되었나요?

질의응답

핵심어 질문 논문에서 추출한 답변
외상후스트레스장애는 무엇인가? 외상후스트레스장애(post-traumatic stress disorder, 이하 PTSD)는 극심한 외상사건에 노출된 이후 재경험, 회피, 과각성 증상 등이 나타나는 질환이다.1)전 인구 중 약 50%가 일생동안 한 번 이상의 극심한 정신적 외상사건에 노출되며,2) 그중 약 7% 정도에서 PTSD가 발병하는 것으로 알려져 있다.
기능적 연결성은 무엇인가? 기능적 연결성(functional connectivity)이란 해부학적으로 떨어져 있는 뇌 영역들에서 시간에 따라 변화하는 기능적 신호들 사이의 통계적인 연관성을 의미한다.23)24) 기능적 자기공명영상(functional magnetic resonance imaging, fMRI) 을 이용한 연구에서는 시계열 데이터에서의 동반-활성화 수준(co-activation level)으로 측정된다.
연결체학 연구는 전망은 어떠한가? 최근 뇌를 구성하는 신경 요소들과 그들 간의 연결성에 대한 지도, 즉 연결체(connectome)를 미시적 수준에서부터 거시적 수준까지 규명하고자 하는 연결체학(connectomics) 연구21)가 대두되었다. 이는 뇌에 대한 기초 연구뿐만 아니라, 임상 연구에서도 뇌 질환의 원인, 발현, 발달 궤도 및 예후에 대한 예측에 중요한 단서를 제공해 줄 것으로 기대되고 있다. 특히 비침습적인 뇌영상 기술의 발전으로 살아있는 뇌의 거시적인 연결성을 밝히려는 연구가 뇌 네트워크에 대한 새로운 통찰을 제공하고 있다.
질의응답 정보가 도움이 되었나요?

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