Development of a bone-conducted ultrasonic hearing aid

2010 Fiscal Year Final Research Report

• Project/Area Number: 20791217
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Otorhinolaryngology
• Research Institution: Nara Medical University
• Principal Investigator: NISHIMURA Tadashi Nara Medical University, 医学部, 助教 (60364072)
• Project Period (FY): 2008 – 2010
• Keywords: 骨導超音波 / 補聴器 / 最重度難聴者

Research Abstract

To develop a bone-conduction ultrasonic hearing aid for profoundly deaf individuals, its perception mechanism was elucidated, and the speech recognition of speech modulated bone-conduction ultrasound was evaluated. The results show that the peripheral region of ultrasonic hearing is in the cochlea and that a direct ultrasonic stimulation in the basal turn provides its sensation. Regarding the speech recognition, good score was observed in the presence of visual information.

Research Products

• [Journal Article] Peripheral perception mechanism of ultrasonic hearing (2011)
  • Author(s): T Nishimura, T Okayasu, Y Uratani, et al
  • Journal Title: Hearing Research in press
  • Peer Reviewed
• [Journal Article] Duration-dependent growth of N1m for speech-modulated bone-conducted ultrasound (2011)
  • Author(s): T Okayasu, T Nishimura, A Yamashita, et al
  • Journal Title: Neuroscience Letters in press
  • Peer Reviewed
• [Journal Article] The effect of visual information in speech signals by bone-conducted ultrasound (2010)
  • Author(s): A Yamashita, T Nishimura, Y Nagatani, et al
  • Journal Title: Neuroreport 21 Pages: 119-122
  • Peer Reviewed
• [Journal Article] Development of cartilage conduction hearing aid (2010)
  • Author(s): H Hosoi, S Yanai, T Nishimura, et al
  • Journal Title: Archives of Materials Science and Engineering 42 Pages: 104-110
  • Peer Reviewed
• [Journal Article] Comparison between bone-conducted ultrasound and audible sound in speech recognition (2009)
  • Author(s): A Yamashita, T Nishimura, Y Nagatani, et al
  • Journal Title: Acta Otolaryngol Suppl 562 Pages: 34-39
  • Peer Reviewed
• [Journal Article] Estimation of factors influencing the results of tinnitus retraining therapy (2009)
  • Author(s): T Koizumi, T Nishimura, T Sakaguchi, et al
  • Journal Title: Acta Otolaryngol Suppl 562 Pages: 40-45
  • Peer Reviewed
• [Journal Article] N1m amplitude growth function for bone-conducted ultrasound (2009)
  • Author(s): T Nishimura, S Nakagawa, A Yamashita, et al
  • Journal Title: Acta Otolaryngol Suppl 562 Pages: 28-33
  • Peer Reviewed
• [Journal Article] Assessment of ability to discriminate frequency of bone-conducted ultrasound by mismatch fields. (2008)
  • Author(s): Yamashita A., Nishimura T, Nakagawa S, et al.
  • Journal Title: Neuroscience Letters 438 Pages: 260-262
  • Peer Reviewed
• [Presentation] 骨導超音波語音の母音刺激長に対するミスマッチフィールド (2010)
  • Author(s): 岡安唯, 西村忠己, 山下哲範, 他
  • Organizer: 第55回日本聴覚医学会学術講演会
  • Place of Presentation: 奈良県新公会堂(奈良県)
  • Year and Date: 20101111-20101112
• [Presentation] Differences between bone-conducted ultrasound and audible sound in speech recognition (2010)
  • Author(s): A Yamashita, T Nishimura, Y Nagatani, et al
  • Organizer: The 13th JAPAN-KOREA Joint Meeting of Otolaryngology-Head and Neck
  • Place of Presentation: Grand Hyatt Seoul (Korea)
  • Year and Date: 20100909-20100911
• [Presentation] Growth of N1m for stimulus duration through bone-conducted ultrasound modulated by Japanese vowel sound (2010)
  • Author(s): T Okayasu, T Nishimura, A Yamashita, et al
  • Organizer: The 13th JAPAN-KOREA Joint Meeting of Otolaryngology-Head and Neck
  • Place of Presentation: Grand Hyatt Seoul (Korea)
  • Year and Date: 20100909-20100911
• [Presentation] Temporal-Integration Mechanism of Bone-Conducted Ultrasonic Speech Sound (2010)
  • Author(s): T Okayasu, T Nishimura, A Yamashita, et al
  • Organizer: ARO 33rd MidWinter Meeting
  • Place of Presentation: Disney land hotel (CA, USA)
  • Year and Date: 20100206-20100210
• [Presentation] Speech Recognition for Bone-Conducted Ultrasound (2010)
  • Author(s): A Yamashita, T Nishimura, Y Nagatani, et al
  • Organizer: ARO 33rd MidWinter Meeting
  • Place of Presentation: Disney land hotel (CA, USA)
  • Year and Date: 20100206-20100210
• [Presentation] 骨導超音波の母音弁別能 (2009)
  • Author(s): 山下哲範, 西村忠己, 長谷芳樹, 他
  • Organizer: 第54回日本聴覚医学会学術講演会
  • Place of Presentation: 横浜プリンスホテル(神奈川)
  • Year and Date: 20091022-20091023
• [Presentation] 骨導超音波語音の母音の長さに対する脳磁界反応 (2009)
  • Author(s): 岡安唯, 西村忠己, 山下哲範, 他
  • Organizer: 第54回日本聴覚医学会学術講演会
  • Place of Presentation: 横浜プリンスホテル(神奈川)
  • Year and Date: 20091022-20091023
• [Presentation] 補聴器装用が難聴者の裸耳の自己評価に与える影響 (2008)
  • Author(s): 西村忠己、穴川芙美、斉藤修, 他
  • Organizer: 第54回日本聴覚医学会学術講演会
  • Place of Presentation: 東京
  • Year and Date: 20081002-20081003
• [Presentation] 視覚情報が骨導超音波の語音聴力に与える影響 (2008)
  • Author(s): 山下哲範、西村忠己、長谷芳樹, 他
  • Organizer: 第54回日本聴覚医学会学術講演会
  • Place of Presentation: 東京
  • Year and Date: 20081002-20081003