ビデオ刺激によるストレス負荷が咀嚼運動に及ぼす影響

抄録

Psychological and social stresses characteristic of the present age have been reported to not only induce psychological and mental instabilities but also affect systemic and local physiological functions and various tissues.
However, it is still unclear if those stresses have a direct influence on the functions of the jaw. With an aim to clarify the mechanism by which psychological stress causes functional changes of the jaw, a video of a mystery story was shown, as a factor of psychological stresses, to 15 subjects with normal jaw functions. Then their emotional states were evaluated by 1/f fluctuation in EEG (α-wave) and scores of State-Trait Anxiety Inventry and the author's original emotion test. The changes of masticatory movement, as a representative for jaw functions, were investigated.
The results suggested that audio-visual stimulation from video might elicit mental and psychological stresses and lead to changes in the masticatory movement in each subject.