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Design of an Extracochlear Prosthesis for the Profoundly Deaf.

Research Project

Project/Area Number 02559003
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 広領域
Research InstitutionHokkaido University

Principal Investigator

IFUKUBE Tohru  Hokkaido University, Research Institute of Applied Electricity, Professor, 応用電気研究所, 教授 (70002102)

Co-Investigator(Kenkyū-buntansha) 庄司 寿一  北海道立特殊教育センタ, 聴覚言語障害研究室, 室長
泉 隆  北海道大学, 応用電気研究所, 助手 (80193374)
松島 純一  北海道大学, 医学部, 講師 (60173829)
高橋 誠  北海道大学, 応用電気研究所, 助教授 (10154858)
犬山 征夫  北海道大学, 医学部, 教授 (70051480)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥7,000,000 (Direct Cost: ¥7,000,000)
Fiscal Year 1991: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1990: ¥5,700,000 (Direct Cost: ¥5,700,000)
KeywordsCochlear Implant / Hearing Impaired / Speech Processing / Stimulation Electrode / Artificial Sensory Organ
Research Abstract

A new model of extracochlear prosthesis has been designed for deaf infants and children.
(1) We have developed a Pt-Ir electrode coated with polyvinyl alcohol gel which contains a saline solution. The coated electrode is suitable for the extracochlear prosthesis because it can firmly adhere to the round window membrane without causing damage so that the residual hearing of patients may not be lost.
(2) In our telemetry method, the output of the speech processor is transmitted with electromagnetic coupling from the first coil inside the earmold to the second coil implanted under the skin of an external ear. Using this method, the subject only has receive a very minor operation. Our cochlear prosthesis may possibly be applied to even a small child.
(3) As a speech coding method, a new idea has been proposed to simultaneously transmit the pitch signal and the second formant frequency through an electrode. It took about 20 ms to detect the pitch signal and the second formant frequency by using a digital signal processor. This new method of speech coding has proven effective for discrimination of the five Japanese vowels based on simple tests.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (34 results)

All Other

All Publications (34 results)

  • [Publications] T.Ifukube,Y.Hirata,J.Matsushima: "A new model of auditory prosthesis using a digital Signal processor" Journal of Microcomputer Applications. 13. 219-227 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y.Hirata,T.Ifukube,J.Matsushima,K.Tochinai: "Evaluation of a Stimulation electrode covered with polyvinyle alcohol gel for extracochlear prosthesis" IEICE Trans.74. 2960-2964 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.Ifukube,Y.Hirata,T.Izumi,J.Matsushima: "Design of a DSP-based extracochlear prosthesis" Proceedings of IEEE EMBS. 13. 1905-1906 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 伊福部 達: "聴覚障害補償へのディジタル技術の応用" 日本音響学会誌. 47. 760-765 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 平田 恵啓,伊福部 達,坂尻 正次,松島 純一: "蝸牛外電気刺激型人工内耳のための信号伝送方式とその評価" 日本聴覚医学会誌. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 平田 恵啓,伊福部 達,坂尻 正次,松島 純一: "蝸牛の電気刺激によって生じる感覚について" 日本聴覚医学会誌. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 伊福部 達: "センサ-の辞伝ー聴覚情報のインテリジェント処理ー" 朝倉書店, 6 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 伊福部 達: "ブリタニカ百科辞典ー生体工学ー" ブリタニカ, 10 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. IFUKUBE, Y. HIRATA, J. MATSUSHIMA: "A New Model of Auditory Prosthesis using a Digital Signal Processor" Journal of Microcomputer Applications. 13. 219-227 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. HIRATA, T. IFUKUBE, J. MATSUSHIMA, and K. TOCHINAI: "Evaluation of a Stimulation Electrode covered with Polyvinyl Alcohol Gel for Extracochlear Prosthesis" IEICE Trans.E 74. 2960-2964 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. HIRATA, T. IFUKUBE, S. SAKAJIRI, and J. MATSUSHIMA: "Signal Transmission Method and its Evaluation for an Extracochlear Prosthesis" Audiology Japan. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. HIRATA, T. IFUKUBE, S. SAKAJIRI, and J. MATSUSHIMA: "On Sensation produced by Electrical Stimulation to the Cochlea" Audiology Japan. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. IFUKUBE, Y. HIRATA, and J. MATSUSHIMA: "A Comparison of Discrimination Characteristics of Vibrotactile Stimulation to Auditory Nerves" Proceedings of An International Conference on Tactile Aids, Hearing Aids and Cochlear Implant. 9 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. HIRATA, T. IFUKUBE, and J. MATSUSHIMA: "Sensations elicited by the Extracochlear Stimulation" Proceedings of World Congress on Medical Physics and Biomedical Engineering. 657 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. IFUKUBE, Y. HIRATA, and J. MATSUSHIMA: "A Stimulation Electrode covered with Polyvinyl Alcohol Gel for an Extracochlear Prosthesis and it's Evaluation in-vitro" Proceedings of World Congress on Medical Physics and Biomedical Engineering. 664 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. IFUKUBE, Y. HIRATA, T. IZUMI, and J. MATSUSHIMA: "Design of a DSP-based Extracochlear Prosthesis" Proceedings of 13th Annual International Conference IEEE EMBS. 1905-1906 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. IFUKUBE, Y. HIRATA, C. WADA, and J. MATSUSHIMA: "Comparison of Discrimination Characteristics between Vibrotactile and Electrical Stimulation of Auditory Nerves" Proceedings of 14th International Congress on Acoustics, Beijing. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. IFUKUBE, Y. HIRATA, C. WADA, and J. MATSUSHIMA: "Comparison of Discrimination Characteristics between Vibrotactile and Electrical Stimulation to Auditory Nerves" Proceedings of 14th International Conference of Acoustics, Beijing. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.Ifukube,Y.Hirata,J.Matsushima: "A new model of auditory prosthesis using a digital signal processor" Journal of microcomputer applications. 13. 219-227 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] Y.Hirata,T.Ifukube,J.Matsushima,K.Tochinai: "Evaluation of a stimulation electrode couered with polyuinyl alcohol gel for extracochlea prosthesis" IECE trans.74. 2960-2964 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Ifukube,Y.Hirata,T.Izumi,J.Matsushima: "Design of a DSP-based extracochlea prosthesis" Proceedings of IEEE EMBS. 13. 1905-1906 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 伊福部 達: "聴覚障害補償へのディジタル技術の応用" 日本音響学会誌. 47. 760-765 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 平田 恵啓,伊福部 達 坂尻 正次,松島 純一: "蝸牛外電気刺激型人工内耳のための信号伝送方式とその評価" 日本聴覚医学会誌. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 平田 恵啓,伊福部 達 坂尻 正次,松島 純一: "蝸牛の電気刺激によって生じる感覚について" 日本聴覚医学会誌. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 伊福部 達: "センサの辞典-聴覚情報のインテリジェント処理-" 朝倉書店, 6 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 伊福部 達: "ブリタニカ百科辞典-生体工学-" ブリタニカ, 10 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Ifukube,Y.Hirata,J.Matsushima: "A new model of auditory prosthesis using a digital signal processor" Journal of Microcomputer Applications. 13. 219-227 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Y.Hirata,T.Ifukube,J.Matsushima,K.Tochinai: "Evaluation of a stimulation electrode covered with polyvinyl alcohol gel for extracochlea prosthesis" IECE Trans.,on Information and System. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 平田 恵啓,伊福部 達,松島 純一,栃内 香次: "蝸牛外電気刺激型人工内耳のための生体工学技術" 電子情報通信学会技術報告. SP89ー136. 37-42 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 平田 恵啓,伊福部 達,松島 純一,栃内 香次: "蝸牛外電気刺激のためのDSPを用いた音声信号処理" 電子情報通信学会技術報告. SP90ー95. 17-22 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Ifukube,Y.Hirata,J.Matsushima: "A comparison of discrimination characteristics of vibrotactile stimulation with that of electrical stimulation to auditory nerves" Inter.Conf.on Tactile Aids,Hearing Aids and Cochlear Implants. 1. 9 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 伊福部 達: "心理物理実験によるマン・マシン系の評価法" バイオメカニズム学会誌. 14. 131-137 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Toru Ifukube: "Advanced Speech Signal Processing" The Bartlett Press,Inc., 36 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 伊福部 達: "センサの事典ー聴覚情報のインテリジェント処理ー" 朝倉書店, 6 (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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