2013 Fiscal Year Final Research Report
High-speed video analysis of acoustically oscillated stapes.
| Project/Area Number |
23592487
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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 |
Otorhinolaryngology
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| Research Institution | Kyushu University |
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Principal Investigator |
TAMAE Akihiro 九州大学, 医学(系)研究科(研究院), 研究員 (50529881)
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| Co-Investigator(Kenkyū-buntansha) |
OHASHI Mitsuru 九州大学, 耳鼻咽喉科 (70529883)
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| Project Period (FY) |
2011 – 2013
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| Keywords | アブミ骨振動 / ハイスピードカメラ / 中耳伝音系 / 伝音難聴評価 |
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| Research Abstract |
In the conductive hearing loss, there were no reports captured the actual movement of the middle ear as an image. So quantitative evaluation of middle ear function was difficult.
This time, through using a high-speed camera, we capture and analysis the stapes movement stimulated by sound. Sound waves from the ear canal can be accurately converted into vertical motion of the stapes in the middle ear. The frequency of the stapes movement was completely identical to the frequency of the stimulating tone under any conditions, biological or decapitated model, pathology or treatment model, the single or chord stimulation. By direct imaging of the middle ear using high-speed camera, we demonstrated that the middle ear work in hearing by the conversion efficiency to the amplitude of the stapes movement.
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