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Establishment of classification of epilepsy in children using scalp EEG-frequency analysis

Research Project

Project/Area Number 21K07751
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionTottori University

Principal Investigator

OKANISHI Tohru  鳥取大学, 医学部, 准教授 (00510273)

Co-Investigator(Kenkyū-buntansha) 藤本 礼尚  聖隷クリストファー大学, リハビリテーション科学研究科, 臨床教授 (30872064)
大栗 聖由  香川県立保健医療大学, 保健医療学部, 講師 (70791078)
前垣 義弘  鳥取大学, 医学部, 教授 (80252849)
金井 創太郎  鳥取大学, 医学部附属病院, 助教 (80836916)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsてんかん分類 / 小児てんかん / 脳波解析 / 薬剤選択 / 治療 / 病態解明 / 周波数解析 / てんかん / 自動解析 / 周波数 / 小児
Outline of Research at the Start

小児のてんかん患者における脳波と臨床データを収集し、患者のてんかん分類(特発部分てんかん、特発全般てんかん、それ以外のてんかん)を行う。次に、脳波のうち、てんかんの典型的な発作間欠期脳波所見である棘徐波とてんかん関連脳波が少ない部分を、てんかん分類ごとにおける脳波データとしてできる限り抽出する。抽出した脳波を開発途中のコンピューターソフトを用いて周波数の傾向について数学的解析を用いて傾向をつかむ。周波数とてんかん分類の傾向を明らかにして、半自動的に脳波からてんかんの分類を予想するソフトウエアを開発する。

Outline of Final Research Achievements

We have successfully collected sufficient EEG data and clinical data. Regarding the method of EEG analysis, we have explored analysis methods using entropy among frequency analyses. We have established the significance and reproducibility of scalp EEG and have mostly solidified our approach. We are currently in the stage of advancing the analysis. Preliminary data from a few pilot cases suggest a correlation between EEG trends and classification/drug suitability. Once these analyses are completed, we will be able to statistically determine the classification methods, the trends of refractory cases, and appropriate medications, which will allow us to move on to writing the paper.

Academic Significance and Societal Importance of the Research Achievements

今後、てんかんの分類方法や、薬剤抵抗性、脳波からの適正薬剤選択の傾向をつかむことができれば、頭皮脳波を行ったデータから治療を自動的に割り出すことが出来る。従来の方法より客観的に脳波からてんかん分類、治療方針の設定が可能となる。社会的には遺伝子検査など高額で先進的な方法よりも幅広く世の中で使うことが出来る。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (17 results)

All 2023 2022 2021

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (10 results) (of which Invited: 2 results)

  • [Journal Article] Identifying risk factors for adverse events of pyridoxal phosphate in infantile epileptic spasms syndrome2023

    • Author(s)
      Arai Y, Okanishi T, Kanai S, Ohta K, Sunada H, Noma H, Maegaki Y.
    • Journal Title

      Epilepsy Behav .

      Volume: 145 Pages: 109348-109348

    • DOI

      10.1016/j.yebeh.2023.109348

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Phase Lag Analysis Scalp Electroencephalography May Predict Seizure Frequencies in Patients with Childhood Epilepsy with Centrotemporal Spikes2023

    • Author(s)
      Masayoshi Oguri, Tetsuya Okazaki, Tohru Okanishi, Masashi Nishiyama, Sotaro Kanai, Hiroyuki Yamada, Kaoru Ogo, Takashi Himoto, Yoshihiro Maegaki, Ayataka Fujimoto
    • Journal Title

      Yonago Acta Medica

      Volume: 66 Issue: 1 Pages: 48-55

    • DOI

      10.33160/yam.2023.02.006

    • ISSN
      0513-5710, 1346-8049
    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Prognostic factors for employment outcomes in patients with a history of childhood-onset drug-resistant epilepsy2023

    • Author(s)
      Arai Y, Okanishi T, Noma H, Kanai S, Kawaguchi T, Sunada H, Fujimoto A, Maegaki Y.
    • Journal Title

      Front Pediatr

      Volume: 11 Pages: 1173126-1173126

    • DOI

      10.3389/fped.2023.1173126

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Risk Factors of Prehospital Emergency Care for Acute Encephalopathy in Children With Febrile Status Epilepticus.2023

    • Author(s)
      Arai Y, Okanishi T, Kanai S, Nakamura Y, Kawaguchi T, Ohta K, Maegaki Y.
    • Journal Title

      Pediatr Neurol

      Volume: 147 Pages: 95-100

    • DOI

      10.1016/j.pediatrneurol.2023.07.015

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Power and connectivity changes on electroencephalogram in postoperative cerebellar mutism2022

    • Author(s)
      Yuto Arai, Tohru Okanishi, Masayoshi Oguri, Sotaro Kanai, Ayataka Fujimoto, Yoshihiro Maegaki
    • Journal Title

      Brain and Development

      Volume: 44 Issue: 10 Pages: 759-764

    • DOI

      10.1016/j.braindev.2022.06.006

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quantitative pretreatment EEG predicts efficacy of ACTH therapy in infantile epileptic spasms syndrome2022

    • Author(s)
      Sotaro Kanai, Masayoshi Oguri, Tohru Okanishi et al.
    • Journal Title

      Clinical Neurophysiology

      Volume: 144 Pages: 83-90

    • DOI

      10.1016/j.clinph.2022.10.004

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Corpus Callosotomy for Controlling Epileptic Spasms: A Proposal for Surgical Selection2021

    • Author(s)
      Tohru Okanishi, Ayataka Fujimoto
    • Journal Title

      Brain Sciences

      Volume: Dec1 Issue: 12 Pages: 1601-1601

    • DOI

      10.3390/brainsci11121601

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 結節性硬化症における脳波周波数解析2023

    • Author(s)
      岡西徹
    • Organizer
      第11回日本結節性硬化症学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Post-operative cerebellar mutism syndromeにおける経時的な頭皮脳波のpower spectrumおよびphase lag indexの変化と臨床的改善の相関の検討2023

    • Author(s)
      荒井勇人、岡西徹、大栗聖由、金井創太郎、前垣義弘
    • Organizer
      第53回日本臨床神経生理学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 小児の急性脳症における神経生理2023

    • Author(s)
      岡西徹、大栗聖由、西山正志
    • Organizer
      第53回日本臨床神経生理学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Post-operative cerebellar mutism syndromeにおける経時的な頭皮脳波のpower spectrumおよびphase lag indexの変化と臨床的改善の相関の検討2022

    • Author(s)
      荒井 勇人, 岡西 徹, 大栗 聖由, 金井 創太郎, 前垣 義弘
    • Organizer
      日本臨床神経生理学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 脳波の基本と判読の方法2022

    • Author(s)
      岡西徹
    • Organizer
      第64回日本小児神経学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 中心・側頭部に棘波をもつ小児てんかんに対するラコサミドの効果2022

    • Author(s)
      岡西 徹, 藤井 裕士, 佐久間 悟, 本井 宏尚, 白石 秀明, 藤本 礼尚, 榎 日出夫
    • Organizer
      第64回日本小児神経学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 小児の難治性てんかんに対する包括的てんかん診療と臨床研究2021

    • Author(s)
      岡西徹
    • Organizer
      第191回四季会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] ACTH不応例のてんかん性スパズムへの治療(symposium座長)2021

    • Author(s)
      岡西徹
    • Organizer
      第63回日本小児神経学会
    • Related Report
      2021 Research-status Report
  • [Presentation] てんかん性スパズムの脳波解析による治療予測因子2021

    • Author(s)
      岡西徹
    • Organizer
      第51回日本臨床神経生理学会
    • Related Report
      2021 Research-status Report
  • [Presentation] てんかんにおける脳波検査の進歩2021

    • Author(s)
      岡西徹
    • Organizer
      第51回中国・四国点頭てんかん研究会
    • Related Report
      2021 Research-status Report
    • Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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