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Fig. 1. Electrode locations and method of data analysis. (A) Implantation site of
the transmitter in the neck area and locations of the electrodes in the five
jaw muscles. (B) Examples of 5 min of simultaneously recorded EMG of three jaw
muscles. (C) The enlargement (left) shows 1 s of muscle activity from the
superficial masseter. The broken lines indicate the levels 5% and 50% of the
peak-EMG. A burst was classified as a series of consecutive samples exceeding
a predefined level of activity. The total number of bursts during 1 day was
classified for muscle activities exceeding the 5% and 50% levels, which
resulted in the distributions of burst number as a function of burst length
(right). Note that the 5 min example (B) is not representative of the depicted
distributions in C.
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