Abstract
The activity patterns of the mandibular elevator muscle system were investigated for speech gestures. Intramuscular wire electrodes were placed into the seven elevator muscles of the mandibular system. The activity of these muscles was recorded along with the jaw displacement in two‐dimensional space (vertical and anterior‐posterior) and the acoustic signal. One adult, native speaker of French, produced different CVC syllables (C = /p/ or /b/, or /t/ and V = /i‐ɛ‐a‐u‐o/) each produced in a carrier phrase at two different speaking rates. Results indicated that intraindividual differences exist in the selection of a given muscle or muscle system for a specific function and/or utterance and in the coordination of muscle activity pattern for a particular gesture.
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