Figure 2From: Identification of the occurrence and pattern of masseter muscle activities during sleep using EMG and accelerometer systems Block diagram of data recording and analyzing system. Tapping activity could be separated from raw data based on rhythmic, sharp and short integral EMG activity and Y axis movements. The clenching activity was separated from grinding activity based on the long continuous muscle bursts with no or small deviation of the Y axis, and residual grinding activity showed long continuous muscle bursts with mandibular movement in the Y axis.Back to article page