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Related Experiment Videos

Brainstem mechanisms underlying feeding behaviors

J P Lund1, A Kolta, K G Westberg

  • 1Faculty of Dentistry Department of Physiology, McGill University, Montréal, Québec, Canada. lund@medcor.mcgill.ca

Current Opinion in Neurobiology
|January 23, 1999
PubMed
Summary
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Essential elements controlling trigeminal motoneurons during feeding are located between the trigeminal and facial motor nuclei. Neural circuits in the brainstem and sensory feedback shape masticatory motor output.

Area of Science:

  • Neuroscience
  • Motor Control
  • Brainstem Circuits

Background:

  • Trigeminal motoneurons are crucial for mastication.
  • Understanding the neural control of feeding is complex.

Purpose of the Study:

  • To identify the essential neural elements controlling trigeminal motoneurons during feeding.
  • To elucidate the mechanisms underlying masticatory motor pattern generation.

Main Methods:

  • Investigated neuronal populations in the medial reticular formation and lateral brainstem.
  • Analyzed the role of orofacial sensory feedback and intrinsic motoneuron properties.

Main Results:

  • Identified key neuronal populations between trigeminal and facial motor nuclei controlling motoneurons.

Related Experiment Videos

  • Demonstrated reorganization of brainstem neurons to generate diverse motor patterns.
  • Confirmed contributions of sensory feedback and motoneuron properties to masticatory output.

    • Conclusions:

    • The control of trigeminal motoneurons during feeding involves a network of brainstem neurons.
    • Orofacial sensory feedback and intrinsic neuronal properties fine-tune masticatory motor commands.