Observation of Motoneurons After Recovery from Experimental Facial Nerve Paralysis
In Bell’s palsy and in Ramsay Hunt’s syndrome, sequelae such as synkinesis, facial spasm, or contracture occur during recovery from facial nerve palsy. The mechanism of these sequelae has not yet been sufficiently clarified. The misdirection of regenerating nerve fibers at the site of injury may result in synkinesis. However, other possible mechanisms of synkinesis, including rearrangement of synaptic vesicles in the facial nucleus, have been suggested . In the present study, the alteration of motoneurons in the brainstem after recovery from experimental facial nerve paralysis was examined by the retrograde horseradish peroxidase (HRP) technique in rabbits.
KeywordsFacial Nerve Masseter Muscle Label Neuron Facial Nucleus Retrograde Tracer
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