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Mandibular tremor during isometric contractions.

Paul F Sowman1, Kemal S Türker

  • 1Research Centre for Human Movement Control, Discipline of Physiology, School of Molecular and Biomedical Sciences, University of Adelaide, Australia.

Archives of Oral Biology
|October 24, 2006
PubMed
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This review examines hypotheses for physiological tremor in the human jaw during isometric contractions. Understanding jaw tremor origins is key for neuromuscular research.

Area of Science:

  • Physiology
  • Neuromuscular Science
  • Biomechanics

Background:

  • Physiological tremor is an inherent rhythmic movement present in skeletal muscles.
  • The human jaw, crucial for mastication and speech, exhibits tremor during sustained muscle activity.
  • Understanding the mechanisms of jaw tremor can provide insights into motor control and neurological conditions.

Purpose of the Study:

  • To review and synthesize existing hypotheses regarding the generation of physiological tremor in the human jaw.
  • To explore the potential neural and mechanical factors contributing to jaw muscle oscillations during isometric tasks.

Main Methods:

  • Literature review of studies investigating human jaw tremor.
  • Analysis of hypotheses related to central neural oscillators and peripheral muscle properties.

Related Experiment Videos

  • Synthesis of findings from electromyography and biomechanical analyses.

    • Main Results:

    • Multiple hypotheses exist, including contributions from the nervous system and muscle biomechanics.
    • Central neural mechanisms and peripheral muscle feedback loops are implicated.
    • The precise interplay of these factors in jaw tremor genesis requires further elucidation.

    Conclusions:

    • The origin of physiological jaw tremor is multifactorial, involving complex interactions.
    • Further research is needed to definitively establish the primary mechanisms driving jaw tremor during isometric contractions.