Diagnostic support of obstructive sleep apnea based on snoring analysis

• Project/Area Number: 21700509
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Medical systems
• Research Institution: The University of Tokushima
• Principal Investigator: EMOTO Takahiro 徳島大学, 大学院・ソシオテクノサイエンス研究部, 助教 (90418989)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: いびき / 無呼吸症候群 / 診断支援 / 閉塞型無呼吸 / 低SNR音検出法 / 高周波解析 / 調波構造区間検出 / 閉塞型無呼吸症候群 / 非線形性 / 高周波 / ホルマント周波数 / 自己組織化マップ / ニューラルネットワーク / 周波数解析

Research Abstract

As an alternative to polysomnography test, we attempted to develop the snore-based OSA diagnosis techniques. The results obtained show that :(i) high diagnosis accuracy is achieved by noise-robust formant detection,(ii) there is a significant difference between OSA and non-OSA snorers in the high frequency region> 5kHz,(iii) apneic snores exhibits more complex behavior with nonlinear dynamic properties compared to non-apenic snores,(iv) neural network-based method developed can detect the low SNR snore-breathing episode.

Research Products

• [Journal Article] High Frequency Region of the Snore Spectra Carry Important Information on the Disease of Sleep Apnea (2011)
  • Author(s): Takahiro Emoto, Udantha R. Abeyratne, Masatake Akutagawa, Shinsuke Konaka and Yohsuke Kinouchi
  • Journal Title: Journal of Medical Engineering and Technology Volume: Vol.35, No.8 Issue: 8 Pages: 425-431
  • DOI: 10.3109/03091902.2011.626838
  • Peer Reviewed
• [Journal Article] Testing the System Nonlinearity in Snoring Sound via Neural Networks (2011)
  • Author(s): Takahiro Emoto, Udantha R. Abeyratne, Masatake Akutagawa, Yohsuke Kinouchi and Shinsuke Konaka
  • Journal Title: Int. Journal of Medical Engineering and Informatics Volume: Vol.3, No.3 Issue: 3 Pages: 299-310
  • DOI: 10.1504/ijmei.2011.042875
  • Peer Reviewed
• [Journal Article] Detecting the snore related sound using neural network based technique, Proceedings of the IASTED International Conference Signal Processing (2011)
  • Author(s): Takahiro Emoto, Udantha R. Abeyratne, Yusuke Aoki, Masatake Akutagawa, Eiji Kondo, Ikuji Kawada, Shinsuke Konaka and Yohsuke Kinouchi
  • Journal Title: Pattern Recognition, and Applications(SPPRA 2011) Pages: 169-172
  • DOI: 10.2316/p.2011.721-105
  • Peer Reviewed
• [Journal Article] Detecting the snore related sound using neural network based technique (2011)
  • Author(s): Takahiro Emoto, et al
  • Journal Title: Proceedings of the IASTED International Conference Signal Processing Pages: 169-172
  • Peer Reviewed
• [Journal Article] Testing the systemu nonlinearity in snoring sound via neural networks (2011)
  • Author(s): Takahiro Emoto, et al
  • Journal Title: International Journal of Medical Engineering and Informatics Volume: (accepted)
  • Peer Reviewed
• [Journal Article] 雑音耐性に優れたいびきのホルマント周波数解析に基づく閉塞型無呼吸症候群と単純いびき症との識別 (2010)
  • Author(s): 榎本崇宏, Udantha R. ABEYRATNE, 楠本哲也, 芥川正武, 近藤英司, 川田育二, 東貴弘, 小中信典, 木内陽介
  • Journal Title: 生体医工学 Volume: Vol.48, No.1 Pages: 115-121
  • NAID: 10031199752
  • URL: https://www.jstage.jst.go.jp/article/jsmbe/48/1/48_1_115/_pdf
  • Peer Reviewed
• [Journal Article] Discriminating apneic snorers and benign snorers based on snoring for mant extracted via a noise-robust linear prediction technique (2010)
  • Author(s): Takahiro Emoto
  • Journal Title: Transactions of Japanese Society for Medical and Biological Engineering 48 Pages: 115-121
  • NAID: 10031199752
  • Peer Reviewed
• [Journal Article] いびきパターン分類に基づく閉塞性いびきと良性いびきの比較 (2010)
  • Author(s): 鈴木優介
  • Journal Title: 電子情報通信学会技術研究報告 109 Pages: 1-4
• [Journal Article] 自己組織化マップを用いたいびき音のクラスタリングに関する基礎検討 (2010)
  • Author(s): 鈴木優介
  • Journal Title: 電子情報通信学会技術研究報告 109 Pages: 7-12
• [Journal Article] Comparing benign snores with apneic snores based on high frequency analysis (2009)
  • Author(s): Takahiro Emoto, Udantha R. Abeyratne, Masatake Akutagawa, Karunajeewa Samantha Asela, Shinsuke Konaka and Yohsuke Kinouchi
  • Journal Title: Proceedings of 2009 World Congress on Medical Physics and Biomedical Engineering Volume: Vol.25, No.7 Pages: 820-823
  • DOI: 10.1007/978-3-642-03885-3_227
  • ISBN: 9783642038846, 9783642038853
  • Peer Reviewed
• [Journal Article] Comparing benign snores with apneic snores based on high frequency a nalysis (2009)
  • Author(s): Takahiro Emoto
  • Journal Title: Proceedings of 2009 World Congress on Medical P hysics and Biomedical Engineering 25 Pages: 820-823
  • Peer Reviewed
• [Presentation] 時間周波数解析によるいびき・母音識別に関する基礎検討 (2012)
  • Author(s): 榎本崇宏
  • Organizer: MEとバイオサイバネティックス研究会
  • Place of Presentation: 九州大学(福岡市)
  • Year and Date: 2012-01-27
• [Presentation] 睡眠中における呼吸に関連する音・環境音識別法の基礎的検討 (2011)
  • Author(s): 橋本知明
  • Organizer: 計測自動制御学会システム・情報部門学術講演会(SSI2011)
  • Place of Presentation: 国立オリンピック記念青少年総合センター(東京都)
  • Year and Date: 2011-11-23
• [Presentation] いびき音のパターン分類に基づくOSAによるいびきと単純いびきの比較 (2009)
  • Author(s): 鈴木優介
  • Organizer: 第32回日本生体医工学会中国四国支部大会
  • Place of Presentation: 広島国際大学
  • Year and Date: 2009-11-28
• [Presentation] ニューラルネットワークを用いたいびき音の抽出 (2009)
  • Author(s): 青木勇輔
  • Organizer: 電気関係学会四国支部連合大会
  • Place of Presentation: 愛媛大学
  • Year and Date: 2009-09-26
• [Presentation] いびきのホルマント周波数解析による閉塞性無呼吸症候群と単純いびき症との識別 (2009)
  • Author(s): 榎本崇宏
  • Organizer: 生体医工学シンポジウム2009
  • Place of Presentation: 千葉大学
  • Year and Date: 2009-09-19