2016 Fiscal Year Final Research Report
Effect of gum chewing on emotional response
| Project/Area Number |
25463024
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Prosthodontics/ Dental materials science and
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| Research Institution | Tokyo Dental College |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Keywords | ガム咀嚼 / 情動反応 / IADS / fNIRS / STAI / VAS / ストレス / 前頭前野 |
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| Outline of Final Research Achievements |
Many studies have investigated and suggested the effects of gum-chewing as a stress coping measure. However, the neurophysiological mechanisms involved are still unclear. The aim of this study was to investigate the hypothesis that gum-chewing activates the PFC in stress coping against negative sounds. Negative sounds were selected and mixed from the International Affective Digitized Sounds-2 (IADS) with fewer than 3.0 in pleasure value.
Gum-chewing activated the PFC activity while exposed to negative sounds from IADS as a mental stress task. Judged mainly by the psychological results, the subjects felt discomfort during NS, which could cause acute stress responses in the brain. Indeed, NS increased Oxy-Hb in the PFC, indicating that NS induced neural activation of the PFC.
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| Free Research Field |
スポーツ歯科医学
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