Motional analysis for establishment of the dynamics of posterior tongue lift movement during pronunciation

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The improvement and the data collection of the measurement device of the movement dynamic state of a tongue posterior region especially important for sending to the pharynx of the bolus of food in this research, and it aimed at the establishment of the objective evaluation method. The tongue movement dynamic state in the time of viewing the time of articulation and a tongue dynamic state by monitor was observed, and the comparison between subject age groups and the operation was done. It is thought that having indicated the value approximated by the movement when the monitor is watched and the articulation suggests the possibility of the use to rehabilitation and the objective evaluation method of the tongue.