2015 年 51 巻 Supplement 号 p. S466-S469
In the music therapy, activation of cerebral function is effective for minimizing the progress of dementia. Additionally, mental stability and reducing mental stress through the music are useful for the improvement of patient’s QOL. In this study, we investigated the activation level of cerebral function during the combination of singing, listening and resting. Furthermore, we investigated the relation between the physical property of music or the impression of music and the effect of listening music on mental condition under the stressful condition. In this investigation, we proposed a new index which can quantify the active status of cerebral function. This index is based on the distance between the center of gravity and its locus which consists of the absolute value of oxyHb and the differential value of oxyHb. At the same time, we analyzed the CSI which is an index of sympathetic nerve in order to investigate the fluctuation of autonomic nerve system. Through these investigations, we confirmed that it is possible to activate the cerebral function by decreasing the CSI efficiently after singing. Moreover, we concluded that familiar sound and the sound including 1/f fluctuation are effective for reducing the mental stress and calming of cerebral function.
