Influence of speaking rate on the upper lip, lower lip, and jaw peak velocity sequencing during bilabial closing movements. 1991

L F DeNil, and J H Abbs
Graduate Department of Speech Pathology, Faculty of Medicine, University of Toronto, Ontario, Canada.

Upper lip, lower lip, and jaw movements were recorded in five adult speakers for repeated sequences of the utterance [bae] at different speech rates. The results failed to confirm several earlier reports of an invariant upper lip, lower lip, jaw peak velocity sequencing pattern for bilabial closures. While the earlier reported sequence was the most frequent, a wide variety of different sequences was also commonly observed. In addition, significant intersubject differences in sequencing were found. The present results thus do not support the earlier hypothesis that oral closure gestures reflect aspects of a centrally generated pattern of motor output during speech.

UI MeSH Term Description Entries
D007568 Jaw Bony structure of the mouth that holds the teeth. It consists of the MANDIBLE and the MAXILLA. Jaws
D008046 Lip Either of the two fleshy, full-blooded margins of the mouth. Philtrum,Lips,Philtrums
D010700 Phonetics The science or study of speech sounds and their production, transmission, and reception, and their analysis, classification, and transcription. (Random House Unabridged Dictionary, 2d ed) Speech Sounds,Sound, Speech,Sounds, Speech,Speech Sound
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D013018 Sound Spectrography The graphic registration of the frequency and intensity of sounds, such as speech, infant crying, and animal vocalizations. Sonography, Speech,Sonography, Sound,Speech Sonography,Sonographies, Sound,Sound Sonographies,Sound Sonography,Spectrography, Sound
D013060 Speech Communication through a system of conventional vocal symbols. Public Speaking,Speaking, Public
D013067 Speech Perception The process whereby an utterance is decoded into a representation in terms of linguistic units (sequences of phonetic segments which combine to form lexical and grammatical morphemes). Speech Discrimination,Discrimination, Speech,Perception, Speech
D014705 Verbal Behavior Includes both producing and responding to words, either written or spoken. Behavior, Verbal,Behaviors, Verbal,Verbal Behaviors

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