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Related Experiment Videos

Mastication and swallowing: an overview.

A J Thexton1

  • 1Department of Physiology, United Medical School of Guy's Hospital, London.

British Dental Journal
|October 10, 1992
PubMed
Summary
This summary is machine-generated.

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Feeding involves jaw and tongue movements for food breakdown and transport. Food consistency dictates whether jaw or tongue activity predominates, controlled by a brainstem pattern generator.

Area of Science:

  • Biomechanics of feeding
  • Neuroscience of motor control
  • Oral physiology

Background:

  • Jaw and tongue movements are crucial for food processing during feeding.
  • The interplay between food characteristics and motor patterns is not fully understood.

Purpose of the Study:

  • To investigate how food consistency influences jaw and tongue movement patterns during feeding.
  • To explore the neural control mechanisms underlying these feeding movements and swallowing.

Main Methods:

  • Analysis of jaw and tongue movement cycles during the consumption of foods with varying consistencies.
  • Examination of sensory input's role in modulating motor patterns.

Main Results:

  • Hard food consumption leads to reduced jaw closing velocity and increased muscle activity.

Related Experiment Videos

  • Soft food consumption results in greater tongue movement and altered jaw opening dynamics.
  • Swallowing during feeding is triggered by sensory input but executed by a brainstem pattern generator.

    • Conclusions:

    • Food consistency significantly shapes jaw and tongue movement patterns during feeding.
    • Sensory feedback modulates, but a brainstem pattern generator dictates, the fundamental motor program.
    • Swallowing is integrated into the feeding cycle, initiated by sensory cues and controlled by the brainstem.