自己顔評価における右側前頭前野の役割の検討 The Role of the Right Prefrontal Cortex in Self-Evaluation of the Face: A Functional Magnetic Resonance Imaging Study

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Individuals can experience negative emotions (for example, embarrassment) accompanying self-evaluation immediately after recognizing their own facial image, especially if it deviates strongly from their mental representation of ideals or standards. In this study, we conducted an fMRI study to identify the cortical regions involved in self-recognition and self-evaluation along with self-conscious emotions. We used facial feedback images selected from a video recording, some of which deviated significantly from normal images. In total, 19 participants were asked to rate images of their own face (SELF) and those of others (OTHERS) according to how photogenic they appeared to be. After scanning the images, the participants rated how embarrassed they felt upon viewing each face. As the photogenic scores decreased, the embarrassment ratings dramatically increased for the participant's own face compared with those of others. The SELF versus OTHERS contrast significantly increased the activation of the right prefrontal cortex, bilateral insular cortex, anterior cingulate cortex, and bilateral occipital cortex. Within the right prefrontal cortex, the anterior region, which is located in the right middle inferior frontal gyrus, was modulated by the extent of embarrassment. This finding suggests that the right middle inferior frontal gyrus is engaged in self-evaluation preceded by self-face recognition based on the relevance to a standard self. <b>[J Physiol Sci. 2008;58 Suppl:S30]</b>

Individuals can experience negative emotions (for example, embarrassment) accompanying self-evaluation immediately after recognizing their own facial image, especially if it deviates strongly from their mental representation of ideals or standards. In this study, we conducted an fMRI study to identify the cortical regions involved in self-recognition and self-evaluation along with self-conscious emotions. We used facial feedback images selected from a video recording, some of which deviated significantly from normal images. In total, 19 participants were asked to rate images of their own face (SELF) and those of others (OTHERS) according to how photogenic they appeared to be. After scanning the images, the participants rated how embarrassed they felt upon viewing each face. As the photogenic scores decreased, the embarrassment ratings dramatically increased for the participant's own face compared with those of others. The SELF versus OTHERS contrast significantly increased the activation of the right prefrontal cortex, bilateral insular cortex, anterior cingulate cortex, and bilateral occipital cortex. Within the right prefrontal cortex, the anterior region, which is located in the right middle inferior frontal gyrus, was modulated by the extent of embarrassment. This finding suggests that the right middle inferior frontal gyrus is engaged in self-evaluation preceded by self-face recognition based on the relevance to a standard self. <b>[J Physiol Sci. 2008;58 Suppl:S30]</b>

Journal

  • Proceedings of Annual Meeting of the Physiological Society of Japan

    Proceedings of Annual Meeting of the Physiological Society of Japan 2008(0), 030-030, 2008

    PHYSIOLOGICAL SOCIETY OF JAPAN

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