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Estimating Mandibular Motion Based On Chin Surface Targets During Speech, Jordan R. Green, Erin M. Wilson, Yu-Tsai Wang, Christopher A. Moore

Department of Special Education and Communication Disorders: Faculty Publications

Purpose: The movement of the jaw during speech and chewing has frequently been studied by tracking surface landmarks on the chin. However, the extent to which chin motions accurately represent those of the underlying mandible remains in question. In this investigation, the movements of a pellet attached to the incisor of the mandible were compared with those of pellets attached to different regions of the chin.
Method: Ten healthy talkers served as participants. Three speaking contexts were recorded from each participant: word, sentence, and paragraph. Chin position errors were estimated by computing the standard distance between the mandibular …