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The neurophysiological study about the control mechanism of the velopharyngeal function

Research Project

Project/Area Number 06404071
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field Surgical dentistry
Research InstitutionNIIGATA UNIVERSITY

Principal Investigator

OHASHI Yasushi  NIIGATA UNIV.School of Dentistry, Professor, 歯学部, 教授 (30013874)

Co-Investigator(Kenkyū-buntansha) ONO Kazuhiro  NIIGATA UNIV.School of Dentistry, Assistant Professor, 歯学部, 助手 (40224266)
ISONO Shinsaku  NIIGATA UNIV.Dental Hospital, Assistant Professor, 歯学部・附属病院, 助手 (10168289)
NAKANO Hisashi  NIIGATA UNIV.Dental Hospital, Lecturer, 歯学部・附属病院, 講師 (60180329)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥10,000,000 (Direct Cost: ¥10,000,000)
Fiscal Year 1995: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1994: ¥7,000,000 (Direct Cost: ¥7,000,000)
KeywordsVelopharyngeal function / Levator veli palatini muscle / Tongue / Palate / Independent stimulation / Simultaneous stimulation / Reflex response / Background activity / 神経生理学 / 舌背粘膜 / 筋電図
Research Abstract

For the purpose of the neurophysiological analysis of the velopharyngeal function, the data collecting analysis device (BRC ; Maclab8) and the polygrapH system (NIHON KOHDEN : RM-6000) were purchased as the equipment that was written in the grant application in 1994 and 1995. Experiments were performed in cats. The cats were anesthetized with halothane and decerebrated. A bipolar electrode was inserted into the levator veli palatini muscle which was a major muscle elevating the soft palate.
In 1994, the innoxious mechanical stimulation was applied to the tongue dorsum. Excitatory or inhibitory response was elicited in the levator veli palatini muscle by pressure stimulation to the tongue dorsum. Excitatory reflexes were elicited under low level background activity (BGA). The excitatory effect decreased with increase of BGA,the inhibitory effect was increased . Reversal levels were calculated from BGA-response curves.As stimulation sites were changed from anterior to posterior of the ora … More l cavity, the reversal level increased. This result indicated that the excitatory reflex was easily elicited from the posterior part and the inhibitory reflex was easily elicited from the anterior part of the oral cavity.
We continued animal experiments in 1995. Assumed the contact style of the tongue to the palate at the chewing, swallowing and pronunciation, the simultaneous stimulation applied to the tongue dorsum and the palate. As stimulation sites were changed from anterior to posterior of the oral cavity, the reversal level in simultaneous stimulation became high. This results agreed with the response characteristic in independent tongue stimulation. When the reversal level in this simultaneous stimulation was compared with the level in the independent stimulation, the former showed a high value, and it became clear that excitement effect reinforced.
It was suggested that the levator veli palatini muscle was ingeniously controlled by integrative reflexes of tongue and palatal mucosa stimulation. Less

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 小野 和弘: "Furlow法による口蓋形成術、第2報 鼻咽腔閉鎖機能ならびに顎発育への影響について" 日本口腔外科学会雑誌. 41. 220-223 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 飯田 明彦: "パ-シャルデンチャーの装着と発音-床装置と舌の反射-" 日本歯科評論. 別冊. 39-46 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 焦 暁輝: "ネコ舌背・口蓋粘膜への同時刺激による口蓋帆挙筋の反射性筋活動" 日本口蓋裂学会雑誌. 20. 300 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 焦 暁輝: "除脳ネコの口蓋帆挙筋の反射性筋活動に関する研究 第1報 舌背粘膜への機械的刺激に対する反射応答" 日本口腔科学会雑誌. 45. 105-112 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 今井 信行: "口唇口蓋裂患児の軟口蓋筋活動-非侵襲性接触型表面電極の検討-" 音声言語医学. 37. 107-108 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Kazuhiro ONO: "Cleft Palate Repair by Furlow Double Opposing Z-plasty : II.Speech Results and Effects on Maxillary Growth" Jpn.J.Oral Maxillofac.Surg.41. 220-223 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Xiaohui JIAO: "Reflex Responses of the Levator Veli Palatini Muscle in Decerebrate Cats 1.Reflex Responses to Mechanical Stimulation of Tongue Mucosa" J.Jpn.Stomatol.Soc.45. 105-112 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小野和宏: "Furlow法による口蓋形成術 第2報 鼻咽腔閉鎖機能ならびに顎発育への影響について" 日本口腔外科学会雑誌. 41. 220-223 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 飯田 明彦: "パ-シャルデンチャーの装着と発音-床装置と舌の反射-" 日本歯科評論. 別冊. 39-46 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 焦 暁輝: "ネコ舌背・口蓋粘膜への同時刺激による口蓋帆挙筋の反射性筋活動" 日本口蓋裂学会雑誌. 20. 300 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 焦 暁輝: "除脳ネコの口蓋帆挙筋の反射性筋活動に関する研究 第1報 舌背粘膜への機械的刺激に対する反射応答" 日本口腔科学会雑誌. 45. 105-112 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 今井信行: "口唇口蓋裂患児の軟口蓋筋活動-非侵襲性接触型表面電極の検討-" 音声言語医学. 37. 107-108 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 焦暁輝,今井信行,大橋靖: "ネコ舌背粘膜の機械的刺激による口蓋帆挙筋の反射性筋活動" 日本口蓋裂学会雑誌. 19巻. 311-312 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 焦暁輝,今井信行,大橋靖: "ネコ舌背及び口蓋粘膜への機械的刺激による口蓋帆挙筋の反射応答について" 新潟歯学会雑誌. 25巻(未定). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 焦暁輝,今井信行,大橋靖: "ネコ舌背・口蓋粘膜への同時刺激による口蓋帆挙筋の反射性筋活動" 日本口蓋裂学会雑誌. 20巻(未定). (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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