Wavelet analysis of masseter muscle EMG during emotional provocation

Document Type

Conference Proceeding

Publication Date

1-1-2003

Abstract

It is believed that emotion plays an important part in jaw muscle mediation. Temporomandibular disorders (TMD) are thought to have origin in stress induced muscle fiber damage. This article details the results of a wavelet analysis performed on electro-myography (EMG) signals recorded from the cat masseter (jaw) muscle during hypothalamic stimulation. This stimulation induces the rage response and serves as the emotional provocation condition. These data were then compared to EMG recordings taken from the masseter muscle during mastication (eating), which simulates the voluntary, non-stress behavioral state muscle activity. The results indicate that the normal safety mechanism that controls muscle fiber recruitment is absent in subjects experiencing emotional stimulation. This finding supports the theory that TMD pain is the result of muscle fiber damage due to hyper-stimulation of fast-fatiguing muscle fiber during a stress state.

Identifier

48449096286 (Scopus)

Publication Title

Proceedings of the IEEE Annual Northeast Bioengineering Conference Nebec

e-ISSN

21607001

ISSN

1071121X

First Page

132

Last Page

133

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