2020 Fiscal Year Final Research Report
Investigation on physiological reactions of vestibular system and semi-circular canals to low-frequency noise
| Project/Area Number |
19K19404
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 58020:Hygiene and public health-related: including laboratory approach
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2021-03-31
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| Keywords | 低周波音 / 音響心理 / 振動感 / 共振 |
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| Outline of Final Research Achievements |
In recent years, many cases of sleep disturbance, headache, dizziness, and nausea suspected to be caused by low-frequency sounds have been reported. It is possible that the vestibular organs and semicircular canals receive low-frequency sounds, causing a sense of "pressure" and "vibration", and that the cases of headache, dizziness, and nausea are due to impaired balance caused by external stimulation of these organs.
In the present study, we conducted psychoacoustic experiments on the "vibration sensation" caused by low-frequency sounds as a basic knowledge to evaluate the specific health effects of low-frequency sounds.
The results suggest that the perception of "vibration sensation" is influenced by resonance, and that it is difficult for subjects to discriminate the threshold of "vibration sensation" and that the experimental design should be revised.
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| Free Research Field |
騒音
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| Academic Significance and Societal Importance of the Research Achievements |
低周波音は，不眠・頭痛・めまい・吐き気など，様々な健康影響の原因であると推察されるが，そのメカニズムに関する知見はきわめて乏しく，健康リスクの評価もきわめて困難である．「振動感」は低周波音によって生じる特異的な知覚反応であり，これを明らかにすることは低周波音による健康影響を明らかにし，そのリスクを低減することに繋がる．本研究成果は，「振動感」の評価において従来の実験的手法では不十分であることを示唆している．
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