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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: J Oral Rehabil. 2017 May 20;44(7):517–525. doi: 10.1111/joor.12517

Figure 1.

Figure 1

Steps to develop the clench detection algorithm: (a) EMG activity (mV) versus time (seconds) from the 15 predefined tasks performed by a subject during one laboratory session; (b) envelopes of each of the 15 tasks after normalization to RMS EMG of Task 15 (maximum clench), rectification and low-pass filtering with amplitude threshold (σ) shown in dashed lines; (c) square waves of each of the 15 tasks where values of 0 and 1 correspond to signals with envelopes smaller and larger, respectively, than the threshold.