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Journal of Behavioral and Brain Science 2013年第7期3卷 509-517页

作者： Yuko Mizuno-Matsumoto takuto hayashi Eika Okamoto Daisuke Miwa Tetsuya Asakawa Ayumi Muramatsu Makoto Kato Tsutomu Murata Center for Information and Neural Networks Advanced ICT Research Institute National Institute of Information and Communications Technology (NICT) Hyogo Japan Center for Information and Neural Networks Advanced ICT Research InstituteNational Institute of Information and Communications Technology (NICT) Hyogo Japan Department of Medical Engineering Aino University Osaka Japan Faculty of Physical Education Osaka University of Health and Sport Sciences Osaka Japan Graduate School of Applied Informatics University of Hyogo Hyogo Japan

Hippocampus is crucial for the formation of emotional memory. We found the relationship between hippocampal responses to emotional stimuli and the mental stabilities of people in our preliminary study. In this study, we have also evaluated how the emotional stimuli would affect amygdala and thalamus in the brain, and how the personality stabilities could relate to the responses in the brain using functional magnetic resonance imaging (fMRI). We evaluated the subjects’ personality features with the Yatabe-Guilford Personality Test (Y-G test) and psychosomatic symptoms with the Cornell Medical Index (CMI). The subjects were categorized into the mentally stable group and the mentally unstable group according to the total scores of the Y-G test and the CMI. The brain functional responses under emotional stimuli were measured using fMRI. The region of interest (ROI) analysis was performed to abstract significant changes in order to compare responses among the different emotional stimuli. We conducted the regression analysis to abstract the relationship between the mean % signal change from fMRI and the personality stability. The fMRI results showed that the hippocampus, thalamus, and right amygdala activities under the human relationship stimuli increased with ascending value of mental instability. Our findings suggest that the memory process in the hippocampus and the threat alarm system in the thalamus under the human-related stimuli crucially influence the emotional reaction of mentally unstable people. These processes in the brain would affect the event that stresses on human relationships that often cause people to suffer from mental disorders.

关键词： fMRI Emotion Personality Hippocampus Thalamus Amygdala

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Journal of Behavioral and Brain Science（行为与脑科学期刊） 2013年第7期 509-517页

作者： Yuko Mizuno-Matsumoto takuto hayashi Eika Okamoto Daisuke Miwa Tetsuya Asakawa Ayumi Muramatsu Makoto Kato Tsutomu Murata

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