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Average amplitude distributions of habitual masseter muscle bursts (n = 8), digastric muscle bursts (n = 5), and bone-strain events (n = 10). με, microstrain. Note that the y-axes have log scales. The thin bars indicate standard deviations. Per hour, there are more masseter bursts than digastric bursts above the 20% activity level. Negative strain amplitudes refer to compressive strain.
