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  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
  • 2024년 07월 03일(수) 13:30
 

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얼굴범주화 과정에서의이력현상(hysteresis)과 뇌 활동 변화

Hysteresis and BOLD Change in Face Categorization

한국심리학회지: 인지 및 생물 / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2007, v.19 no.1, pp.39-51
https://doi.org/10.22172/cogbio.2007.19.1.003
김정훈 (KAIST 인문사회과학부)
김초복 (뉴멕시코 주립대학교 심리학과)

초록

인지행동 연구에서 밝혀진 얼굴범주화과정에서의 이력현상(hysteresis)의 배후 뇌 기제를 fMRI 측정을 통하여 직접 밝히고자 하였다. 이력현상이 관찰될 때, 특정 뇌 영역들, V1, V4v, 그리고 FFA에서의 뇌 활동 변화를 측정하였는데, 시각정보의 초기 처리를 담당하는 영역에서와는 달리 얼굴인식에 주요한 역할을 담당하는 것으로 믿어지는 FFA에서의 증가된 뇌 활성화를 관찰할 수 있었다. 이는 FFA가 얼굴인식 연구에서 관찰된 여러 정보처리 특성들과 함께 얼굴범주화의 과정에도 깊이 관여함을 시사한다.

keywords
이력현상, fMRI, FFA, 얼굴범주화, hysteresis, fMRI, FFA, face categorization

Abstract

Using fMRI, we have investigated the underlying brain mechanism for hysteresis effect revealed in face categorization. Selective activation of human brain areas, V1, V4v, and FFA to sequentially presented synthetic faces has been measured. There was a strong activation in FFA for categorizing faces, while there was no difference in activation in V1 and V4v. These results indicate that FFA might be closely related with the processing of face categorization, in addition to various face-specific information processing.

keywords
이력현상, fMRI, FFA, 얼굴범주화, hysteresis, fMRI, FFA, face categorization

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한국심리학회지: 인지 및 생물