Measuring biting behavior induced by acute stress in the rat

Previous reports have indicated that biting behavior is enhanced in rats that are subject to acute stress. Several methods have been proposed for studying this phenomenon, one of which is the electromyography (EMG) of the jaw muscles. In this study, we compared total EMG activity with the EMG activi...

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Veröffentlicht in:Behavior research methods 2009-08, Vol.41 (3), p.761-764
Hauptverfasser: Zeredo, J. L., Kumei, Y., Shibazaki, T., Yoshida, N., Toda, K.
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container_issue 3
container_start_page 761
container_title Behavior research methods
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creator Zeredo, J. L.
Kumei, Y.
Shibazaki, T.
Yoshida, N.
Toda, K.
description Previous reports have indicated that biting behavior is enhanced in rats that are subject to acute stress. Several methods have been proposed for studying this phenomenon, one of which is the electromyography (EMG) of the jaw muscles. In this study, we compared total EMG activity with the EMG activity related to biting behavior, as determined by video monitoring, before and after restraint stress. Wistar albino rats (150 g) were subject to surgery for electrode placement 48 h before measurements. The EMG activity of the masseter muscle on one side was recorded for 10 min before and immediately after 30 min of restraint stress. Restraint stress increased jaw muscle EMG activity, although some of the activity was related to behaviors other than biting. Recording the EMG activity of jaw muscles is useful for measuring the stress response in rats, but careful video monitoring is needed if biting behavior is to be studied in particular.
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subjects Animals
Behavior
Behavioral Science and Psychology
Biting
Biting behavior
Cognitive Psychology
Data analysis
Electrodes
Electromyography
Electromyography - methods
Jaw
Masseter muscle
Masseter Muscle - physiology
Mastication - physiology
Muscles
Muscular system
Psychology
Rats
Rats, Wistar
Restraint, Physical - physiology
Stress
Stress response
Stress, Physiological - physiology
Studies
title Measuring biting behavior induced by acute stress in the rat
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