Kyoto University · 신경과학
와타루 사토 교수의 연구실은 뇌의 사회인지 기능, 특히 동적인 얼굴 표정 인식과 정서 처리의 신경 기반을 중심으로 연구를 진행하고 있습니다. 정서적 표정이 뇌의 조기 시각 처리에 어떻게 영향을 미치는지, 그리고 자폐 스펙트럼 장애에서 동적 얼굴 표정보다의 인식 장애가 어떻게 뇌 네트워크의 기능적·구조적 이상과 연관되는지 탐구합니다. 또한 주관적인 행복감의 뇌 기초를 규명하고, 얼굴 표정의 유사성과 공감 기반의 정서 공유 메커니즘을 신경과학적으로 분석합니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
To investigate the hypothesis that early visual processing of stimuli might be boosted by signals of emotionality, we analyzed event related potentials (ERPs) of twelve right-handed normal subjects. Gray-scale still images of faces with emotional (fearful and happy) or neutral expressions were presented randomly while the subjects performed gender discrimination of the faces. The results demonstrated that the faces with emotion (both fear and happiness) elicited a larger negative peak at about 2
In this study, we presented computer‐morphing animations of the facial expressions of six emotions to 43 subjects and asked them to evaluate the naturalness of the rate of change of each expression. The results showed that the naturalness of the expressions depended on the velocity of change, and the patterns for the four velocities differed with the emotions. Principal component analysis of the data extracted the structures that underlie the evaluation of dynamic facial expressions, which diffe
These results suggest that weak activity and connectivity of the social brain network underlie the impairment in social interaction involving dynamic facial expressions in individuals with ASD.
These structural and functional MRI studies provide supportive evidence for the hypothesis that an atypical social brain network underlies behavioral social problems in ASD.
Happiness is a subjective experience that is an ultimate goal for humans. Psychological studies have shown that subjective happiness can be measured reliably and consists of emotional and cognitive components. However, the neural substrates of subjective happiness remain unclear. To investigate this issue, we used structural magnetic resonance imaging and questionnaires that assessed subjective happiness, the intensity of positive and negative emotional experiences, and purpose in life. We found
These results suggest that facial mimicry influences the sharing and recognition of emotional valence in response to others' dynamic facial expressions.
Facial expressions that show emotion play an important role in human social interactions. In previous theoretical studies, researchers have suggested that there are universal, prototypical facial expressions specific to basic emotions. However, the results of some empirical studies that tested the production of emotional facial expressions based on particular scenarios only partially supported the theoretical predictions. In addition, all of the previous studies were conducted in Western culture
