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Figure 1. A typical masticatory sequence of a freely behaving mouse chewing chow pellets. Vertical (Vert), horizontal (Horz), and antero-posterior (A-P) components of the jaw movement are shown in a time sequence synchronized with the left masseter (LMAS), right masseter (RMAS), and right digastric (RDIG) electromyograms. At the bottom, jaw movement trajectories were reconstructed in the sagittal plane during food intake, chewing, and the next food intake. Arrows above three traces indicate the time period for each drawing.
