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Orofacial somatosensory function in speech production and perception| old_uid | 13946 |
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| title | Orofacial somatosensory function in speech production and perception |
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| start_date | 2014/05/12 |
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| schedule | 10h30 |
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| online | no |
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| location_info | Ampère |
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| summary | Complicated movement and coordination of speech articulators produces speech sounds. Despite a large number of studies for a long time, it is still unknown how orofacial somatosensory system functions in speech motor control and learning. Because several orofacial muscles lack muscle proprioceptors, orofacial cutaneous inputs may play an important role in speech somatosensory processing. We have here examined (1) interaction between orofacial somatosensory afferents and the perception of speech sounds, (2) neural correlate to somatosensory function in speech perception and (3) somatosensory afferents associated with facial skin deformation in speech motor learning. In series of the studies, we applied mechanical perturbations to the facial skin. By observing behavioral change and electroencephalographic activity in response to the perturbation in speech production and perception, we found a significant role of orofacial inputs associated with facial skin deformation in speech production and perception. The result suggests speech perception and production are intimately linked in terms of somatosensory processing. Based on the current findings, I further discuss future experimental plan for the investigation of the relationship between speech perception and production and their underlying representations. |
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| responsibles | Loevenbruck, Welby |
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