On Time-dependent Alteration of the Speech Production Procedures for Denture Wearer's Sounds.
Hajime Ishigami, Masakazu Kurachi, Yoshiharu Yamamura, Sanae Yamada · Nihon Hotetsu Shika Gakkai Zasshi · 1992
A hypothetical process of speech productive alteration procedures is presented. The recent pronounciation studies in dental prosthetic literature is reviewed with emphasis on statistical references of the sample means. In this case, the alteration level scores of speech production is demonstrated as habituation to follow the sample variances in inter-word or inter-syllabic variations. A dual-type trend of the state in statistical variences, one time-dependent and one time independent, are assumed to develop respectively in temporal sound feature. Syllabic features of time-dependent parameter is effectively displayed in the capital or pre-syllabic word unit. Auditory feedback controls are possively relevant to the second and the ensuring syllables, and are evaluated in the area where the sound parameters are relatively stable. From the neurophysiological standpoint of the speechchain model theory, natural speech sound series consist practically in the chain model. Though, in earlier period, the plate wearer's sounds cause a breakdown of the interrelation of chain model, the sounds are in time recovered from the disorder. In experiments and observations of human habituation in dental research, the series of speech materials should be in chain model and the research object of a unit should be in the first syllable.