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Jaw‐muscle activity in ferrets, Mustela putorius furo
Author(s) -
Dessem Dean,
Druzinsky Robert E.
Publication year - 1992
Publication title -
journal of morphology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.1052130211
Subject(s) - biting , mastication , biology , anatomy , electromyography , bite force quotient , masseter muscle , mustela putorius , force transducer , condyle , zoology , ecology , paleontology , physics , neuroscience , acoustics
Electromyographical (EMG) activity was recorded bilaterally from the masseter and temporalis muscles of alert ferrets ( Mustela putorius furo ) during mastication and crushing. Electromyographic activity was also recorded during biting while a bite‐force transducer placed between the carnassial teeth registered forces ranging from 1.5 to 48.8 N. Linear regression analysis demonstrates that temporalis and masseter EMG activity are linearly related to bite force. Electromyographic activity from the balancing‐side muscles is nearly equal to EMG activity of the working‐side muscles during bone crushing with the carnassial teeth. It is hypothesized that a high percentage of balancing‐side muscle activity in ferrets can be recruited during carnassial biting because the postglenoid process prevents ventral displacement of the working‐side mandibular condyle. © 1992 Wiley‐Liss, Inc.