In this study, we investigated the correlations between the brain responses of young people when viewing infants’ facial expressions and seven dimensional scores of the Temperament and Character Inventory (TCI). We used fMRI to scan 55 healthy nulliparous female volunteers (age M = 20.2, SD = 0.4). During fMRI, photographs of infant faces (happy, sad, and neutral) were presented to the participants in pseudo-randomized order. During the viewing of infants’ sad and neutral faces, significant negative correlations were found between Persistence, one of the TCI, and the responses of various brain regions, including bilateral amygdala, bilateral orbitofrontal cortex, and bilateral ventromedial prefrontal cortex. These results suggest that patient people inhibit the activation of emotion-related regions when viewing sad faces.
（女子大学生55名を対象に、乳児の表情(happy、neutral、sad)を提示した時の脳活動をfMRIにて計測し、Big fiveのPersistence（固執）との相関を検討した。両側の偏桃体、OFC、vmPFCにおいてneutral, sadの表情をみているときの脳活動と有意な負の相関がみられた。）
PS26A-08-419
Motoko Tanabe, Katsuko Niwano, Ayahito Ito, Yosuke Sato, Toshikatsu Fujii
