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Regeneration of the laryngeal sensory nerves
Author(s) -
Satoh Isei,
Harvey Joseph E.,
Ogura Joseph H.
Publication year - 1974
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1288/00005537-197401000-00005
Subject(s) - reinnervation , larynx , reflex , stimulation , superior laryngeal nerve , anatomy , recurrent laryngeal nerve , medicine , soft palate , mucous membrane , sensory system , sensation , surgery , anesthesia , biology , neuroscience , pathology , thyroid
A study of reflex movements of the vocal cords induced by electrical stimulation of the mucous membrane of the larynx or by stimulating the internal branch of the superior laryngeal nerve (evoked EMG) in normal dogs was done. The internal branch was sectioned subsequently, and the progress of regeneration was studied over a period of months by the same techniques. Return of reflex movement to the vocal cords and soft palate indicated that the nerve was completely regenerated between 60 and 75 days, and reinnervation of the mucous membrane was accomplished by 79 days. The evoked EMG induced by stimulation of the nerve showed abnormal threshold and wave form. Secretion of the laryngeal mucous membrane glands never returned during stimulation. These observations are discussed in relation to surgery of this area.