The masticatory CPG is composed of two groups of neurones:
- Rhythm generator: generates the basic masticatory rhythm
- Burst generator: adapts the rhythm according to sensory inputs from the oral cavity so that the movement becomes appropriate for the food bolus, size, viscosity and temperature
Mastication is somewhat a reflex mechanism because the CGP automatically initiates and maintains jaw opening/closing without conscious input. We don't have to think about which muscles to activate and the timing of activation. However, this is still under our voluntary control.
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