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. 2014 Oct 6;11(99):20140564. doi: 10.1098/rsif.2014.0564

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© 2014 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 6. — Activation of the working side jaw closer muscles (expressed as a percentage of their maximum force) predicted by the MDA simulation during molar shearing. The muscles responsible for molar occlusion (group 1, see text) activate during the fast closing stage and peak early in the slow closing phase. The muscles responsible for shearing of the food bolus (group 2, see text) activate at the beginning of the slow closing phase and peak shortly afterwards. The EMG profiles reported by Weijs & Dantuma [32] for pellet mastication are also shown (expressed as an excitation level (EX.L)) (note that EMG profile for the temporalis is an average for the whole muscle). (Online version in colour.)