2012 Fiscal Year Final Research Report
Researches for practical use of the ultra sound hearing system for profoundly hearing impaired patients and auditory mechanism of ultra sound
| Project/Area Number |
22390319
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Otorhinolaryngology
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| Research Institution | Nara Medical University |
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Principal Investigator |
HOSOI Hiroshi 奈良県立医科大学, 耳鼻咽喉・頭頸部外科学講座, 教授 (80094613)
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| Co-Investigator(Kenkyū-buntansha) |
SOETA Yoshiharu (独)産業技術総合研究所, 健康工学研究部門, 主任研究員 (10415698)
NISHIMURA Tadashi 奈良県立医科大学, 耳鼻咽喉頭頸部外科学講座, 助教 (60364072)
SHIMOKURA Ryota 奈良県立医科大学, 耳鼻咽喉頭頸部外科学講座, 助教 (90455428)
MATSUI Toshie 奈良県立医科大学, 耳鼻咽喉頭頸部外科学講座, 特別研究員 (10510034)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 耳科学 |
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| Research Abstract |
Although we can not hear ultra sound above 20 kHz, the vibration in the frequency can induce auditory sensation through the bone conduction (bone-conducted ultrasound). And it is interesting that the bone-conducted ultrasound can induce auditory sensation also for profoundly hearing impaired patients who can not hear sound absolutely. Using this phenomenon, we have developed the bone-conducted ultrasound hearing aid. In this study, we addressed two challenges such as
(1) definition of the mechanism of ultrasound perception
and (2) practical realization of the bone-conducted ultrasound hearing aid.
As results, the mechanisms on the peripheral and central auditory pathways were clarified; for examples, that the peripheral perceptual organs are located in the basal turn of the cochlea, the perceptual organs respond not to the transformed audible sound but to the ultrasound itself, and the outer hair cells does not work at that time. Moreover, practical researches of the hearing aid could found that the amplitude-modulated ultrasound in language can express the prosody (intonation) and the rehabilitation using the hearing aid can improve the speech intelligibility.
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Research Products
(46 results)
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[Presentation] 軟骨伝導補聴器の開発-耳栓による気導,骨導,軟骨伝導閾値の変化の比較-2011
Author(s)
西村忠己,齋藤 修,宮前了輔, 下倉良太,福田芙美,清水直樹,森本千裕,松井淑恵,細井裕司
Organizer
第21回日本耳科学会総会
Place of Presentation
宜野湾
Year and Date
20111124-26
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