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Communication Dans Un Congrès Année : 2022

Orofacial Somatosensory inputs in speech perceptual training modulate speech production

Résumé

Somatosensory inputs are important to acquire or learn precise control of movement. In the case of speech, receiving somatosensory inputs together with corresponding speech sounds may be a key to formulate or calibrate the speech production system. We here examined whether speech production can be modulated by perceptual training with repetitive exposure to paired auditory-somatosensory stimulation in the absence of actual production of the sound. We carried out a perceptual training using a vowel identification task with /e/-/ø/ continuum. The speech sounds were accompanied with somatosensory stimulation, in which a facial skin-stretch was applied in the backward direction. The vowels /e/ and /ø/ were recorded prior to and following the training and the first three formants were compared. Results showed that the third formant of /e/ was increased following the training, and the rest of formant was not changed. Since the current somatosensory stimulation was related to the articulatory movement for the production of /e/ (lip-spreading), repetitive exposure to somatosensory stimulation in addition to the sound may specifically change the articulatory behavior for the production of /e/. The results suggest that perceptual training with specific pairs of auditory-somatosensory inputs can be important to formulate production mechanisms.
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Dates et versions

hal-03813321 , version 1 (13-10-2022)

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Monica Ashokumar, Jean-Luc Schwartz, Takayuki Ito. Orofacial Somatosensory inputs in speech perceptual training modulate speech production. Interspeech 2022 - 23rd Annual Conference of the International Speech Communication Association, Sep 2022, Incheon, South Korea. pp.784-787, ⟨10.21437/Interspeech.2022-10993⟩. ⟨hal-03813321⟩
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