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Full-Text Articles in Education
The Development Of Jaw Motion For Mastication, Erin M. Wilson, Jordan R. Green
The Development Of Jaw Motion For Mastication, Erin M. Wilson, Jordan R. Green
Department of Special Education and Communication Disorders: Faculty Publications
The developmental course of early chewing has rarely been studied, although such knowledge is essential for understanding childhood feeding and swallowing disorders. The goal of this investigation was to quantitatively describe age- and consistency-related changes in jaw kinematics during early chewing development. An optical-motion tracking system was used to record jaw movements during chewing in 3-dimensions in 11 typically-developing participants longitudinally from 9–30 months of age. Age related changes in jaw movement were described for both puree and regular consistencies. The findings demonstrated that the development of rotary jaw motion, jaw motion speed, and management of consistency upgrades are protracted …
Early Speech Motor Development: Cognitive And Linguistic Considerations, Ignatius S. B. Nip, Jordan R. Green, David B. Marx
Early Speech Motor Development: Cognitive And Linguistic Considerations, Ignatius S. B. Nip, Jordan R. Green, David B. Marx
Department of Special Education and Communication Disorders: Faculty Publications
This longitudinal investigation examines developmental changes in orofacial movements occurring during the early stages of communication development. The goals were to identify developmental trends in early speech motor performance and to determine how these trends differ across orofacial behaviors thought to vary in cognitive and linguistic demands (i.e., silent spontaneous movements, babble, and first words). Movements of the lower lip and jaw were recorded using a three-dimensional motion capture system. Twenty-four infants were observed every 3 months, from 9 to 21 months of age. Jaw and lower lip speed, and lower lip range of movement increased with age. Silent spontaneous …