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Masseter muscle activity and the hypoglossal nerve
Author(s) -
HARA I.,
HIRAKAWA T.,
HONDA E.,
SETO T.,
NAKAHARA S.
Publication year - 1995
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.1995.tb00092.x
Subject(s) - hypoglossal nerve , masseter muscle , anatomy , medicine , tongue , pathology
SUMMARY The effects of severing the hypoglossal nerve and resultant restriction of tongue movement was evaluated for its effect on masticatory jaw movement. Electromyograms of masseter muscles in the feeding rat were recorded 3 days after the nerve severing operation at 1 week intervals. Even after severing the lateral branches of the hypoglossal nerve bilaterally, active‐feeding behaviour continued with mastication slightly impaired. After severing the medical branches bilaterally, feeding behaviour was rarely observed, but where eating did take place mastication was impaired with marked disturbance in the masticatory rhythm.