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A study in the strategy for motor control of human masticatory system - about the participation of anticipation -

Research Project

Project/Area Number 12671893
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 補綴理工系歯学
Research InstitutionNagasaki University

Principal Investigator

NOGUCHI Kazuko  Nagasaki University, School of Dentistry, Instructor, 歯学部, 助手 (50172771)

Co-Investigator(Kenkyū-buntansha) YOSHIMATSU Tadashi  Nagasaki University, School of Dentistry, Instructor, 歯学部, 助手 (50230800)
YAMABE Yoshihisa  Nagasaki University, School of Dentistry, Associate Professor, 歯学部, 助教授 (90191379)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2001: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2000: ¥1,700,000 (Direct Cost: ¥1,700,000)
Keywordsjaw tapping / acoustic command signal / anticipation / surplus tapping / elderly adults / young adults / dual-task / motor control / 高齢有歯顎者 / 青年有歯顎者 / 高齢総義歯装着者 / ランダム周期 / 誤試行
Research Abstract

Five elderly dentulous people (mean age 72), three elderly edentulous people with dentures (65), nine dentulous young adults (25), nine dentulous young adults instructed dual-task (24), performed jaw-tapping movements in time to an acoustic signal train with random intervals, that 1.3 Hz interval appears the most frequently. The dual-task group was instructed to memorize words on the monitor screen while performing jaw tapping. We observed some parameters among Masseteric muscle EMG (Mm), Mandibular Kinegiogram, and acoustic signal on surplus tappings. 1. Incidences of surplus tapping in the dual-task group have no relation to numbers of 1.3 Hz repetition and were very low after intervals of 1.3 Hz x 2. Gape in dual-task group is small. 2. The surplus tapping after the interval of 1.3 Hz x 2 appear at intervals of 1.3 Hz from the preceding signal, and began to appear after some 1.3 Hz x 2 intervals. 3. The time lags between the expected signal at intervals of 1.3 HZ from the preceding signal and Mm burst onset of the surplus taping: Those average is smaller at the surplus tapping after 1.3 Hz intervals. (We guess that onset of Mm burst is before the confirmation of signal.) Those average is larger at the surplus tapping after 1.3 Hz x 2 intervals. (We guess that Mm burst onset in both elderly group begin after confirmation of signal.) 4. The more numbers of 1.3 HZ repetition is, the larger gape is except dual-task group. 5. The elderly group have more complete surplus tapping and the young group more incomplete surplus tapping. 6. It can be summarized as follows: In the dual-task group, the second task is not a distracted attention task but an arousal task. Subjects remember intervals that appear the most frequently, the surplus tapping appear at those intervals. And these show the degree of dependence on anticipation.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] 野口 和子: "高齢者群と青年群の下顎タッピング運動調節の特性"日本補綴歯科学会雑誌. 45. 86 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Noguchi, Kazuko: "Characteristics of Control for Mndibular Tapping Movements in the Elderly and Young Adults"The journal of the Japan Prosthodontic Society. Vol. 45. 86-86 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 野口 和子: "高齢者郡と青年郡の下顎タッピング運動調節の特性"日本補綴歯科学会雑誌. 45・特別号. 86 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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