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Related Experiment Videos

Jaw stretch reflexes in children.

Donald S Finan1, Anne Smith

  • 1Speech, Language, and Hearing Sciences and the Center for Neuroscience, University of Colorado, Boulder, CO 80309, USA. Don.Finan@colorado.edu

Experimental Brain Research
|June 28, 2005
PubMed
Summary

Motor control during development is challenging. The jaw stretch reflex matures throughout childhood, with developing sensorimotor pathways supporting complex motor skill acquisition.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Motor Control

Background:

  • Human development involves significant morphological changes impacting motor control.
  • Variability in skilled motor performance is characteristic of developing systems.
  • The jaw stretch reflex is crucial for jaw stability in adults.

Purpose of the Study:

  • To investigate the response properties of the jaw stretch reflex in children and adults.
  • To understand the developmental trajectory of oral sensorimotor pathways.

Main Methods:

  • Examined jaw stretch reflex in two groups of young children and young adults.
  • Measured response latencies, reflex gain, and biting force.

Main Results:

  • Response latencies increased with age/development.
  • All age groups showed stimulus-magnitude-dependent increases in reflex gain and biting force.
  • Older children (9-10 years) exhibited the largest reflex gain, but biting force increases were similar across groups.

Conclusions:

  • Oral sensorimotor pathways mature throughout childhood.
  • This maturation supports the acquisition of complex motor skills.
  • Jaw stretch reflex development is integral to motor skill acquisition.

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