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Title
  • ja 閉口筋感覚-運動制御機構の特異性
  • en Specificities of the sensorimotor mechanisms controlling jaw movements
Creator
    • ja 齋藤, 充 en SAITO, Mitsuru
Subject
  • Other en mastication
  • Other en jaw movement
  • Other en mesencephalic trigeminal neuron
  • Other en trigeminal motoneuron
  • Other en jaw-closing muscle
Description
  • Other en During eating food, we sense size, hardness and texture, as well as temperature, taste and flavor of foods. We can chew various foods smoothly and efficiently by utilizing such sensory information. This indicates that the excellent sensorimotor mechanisms underlie the control of jaw movements during mastication. The nervous and muscular apparatus involved in mastication can be divided to three groups: 1) higher-order centers such as the cortical masticatory area, basal ganglia, and cerebellum, 2) the“ central pattern generator (CPG)” and its closely related neural network in the brainstem, and 3) sensory organs (including muscle spindles, periodontal mechanoreceptors and temporomandibular joint receptors), primary sensory neurons (PSNs), alpha/gamma motor neurons (MNs) and jaw-closing/opening muscles. All these groups of the apparatus play essential roles during mastication. However, it is thought to be essential to clarify the characteristics of stretch reflex circuit when investigating the properties of motor control system. Because sensory inputs into and motor commands from the higher-order centers/CPG are definitely mediated through the PSNs and MNs, respectively, the functions of higher-order centers/CPG cannot completely be elucidated unless the properties of PSNs and MNs is well understood. In this article, I will explain the specificities of the jaw-jerk reflex circuit, PSNs in the mesencephalic trigeminal nucleus and trigeminal MNs with the results of our related research.
Publisher ja 鹿児島大学 en Kagoshima University
Date
    Issued2016-03-25
Language
  • jpn
Resource Type departmental bulletin paper
Version Type VoR
Identifier HDL http://hdl.handle.net/10232/26736 , URI https://ir.kagoshima-u.ac.jp/records/3154
Journal
    • PISSN 03897834
    • NCID AN0035442X
      • ja 鹿児島大学歯学部紀要
      • Volume Number36 Page Start11 Page End18
File
    • fulltext 36_p11-18.pdf
    • 1.2 MB (application/pdf)
      • Available2016-10-28
Oaidate 2024-01-30