Modulation of an inhibitory reflex in single motor units in human masseter at different joint angles.
The inhibitory reflex evoked in single units in human masseter by lip stimulation was recorded at several joint angles. The pre-stimulus firing frequency of the unit was kept constant. Some modulation of the inhibitory response at different vertical jaw positions (i.e. temporomandibular joint angle) was observed in most masseter units, with the majority of the modulated units being inhibited less when the teeth were closer together.
Türker
K S
KS
Department of Physiology, University of Adelaide, Australia.
Seguin
J J
JJ
Miles
T S
TS
D000200:Action Potentials; D000293:Adolescent; D000328:Adult; D004558:Electric Stimulation; D006801:Humans; D007568:Jaw / Q000502:physiology*; D008406:Masseter Muscle / Q000294:innervation* / Q000502:physiology; D008410:Masticatory Muscles / Q000294:innervation*; D009046:Motor Neurons / Q000502:physiology*; D009433:Neural Inhibition; D012018:Reflex