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Article
April 1975

Human Masseter Muscle: Hand Tendon Reflexes: Their Paradoxical Potentiation by Muscle Vibration

Author Affiliations

From the Brain Research Unit, University of Brussels.

Arch Neurol. 1975;32(4):229-234. doi:10.1001/archneur.1975.00490460045005
Abstract

We developed a method for direct electrical stimulation of the masseter nerve in man. Both direct M-responses and genuine H-reflexes were recorded from the ipsilateral masseter muscle. Muscle vibration that inhibits the Achilles tendon reflex and the soleus H-reflex was found to potentiate the masseter tendon reflex and also the masseter H-reflex. This unexpected contrast may be related to peculiar brain stem circuitry of the masseter reflex mechanism.

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