This work focuses on somatosensory function in speech motor learning. The long-term goal is to understand how somatosensory and auditory information are integrated in the control of speech and how somatosensory feedback on its own contributes to motor learning. The studies extend from an evaluation of the specificity of motor learning and an assessment of its somatosensory basis, to an examination of somatosensory influences on speech perception. A common procedure is adopted throughout - the use of a servo-controlled robotic manipulator to deliver precise mechanical perturbations to the jaw. There has been surprisingly little work on somatosensory function in speech and on speech learning in general. Even quite basic properties of speech motor learning such as its specificity and the extent of somatosensory involvement are largely unexplored and these form the basis of this research. These topics are central to clinical issues of training and rehabilitation as well to our basic understanding of the mechanisms of speech motor control.

National Institute of Health (NIH)
National Institute on Deafness and Other Communication Disorders (NIDCD)
Research Project (R01)
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Special Emphasis Panel (ZRG1-BBBP-E (02))
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Shekim, Lana O
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Haskins Laboratories, Inc.
New Haven
United States
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Ito, Takayuki; Ostry, David J (2012) Speech sounds alter facial skin sensation. J Neurophysiol 107:442-7
Rochet-Capellan, Amélie; Richer, Lara; Ostry, David J (2012) Nonhomogeneous transfer reveals specificity in speech motor learning. J Neurophysiol 107:1711-7
Lametti, Daniel R; Nasir, Sazzad M; Ostry, David J (2012) Sensory preference in speech production revealed by simultaneous alteration of auditory and somatosensory feedback. J Neurosci 32:9351-8
Rochet-Capellan, Amelie; Ostry, David J (2011) Simultaneous acquisition of multiple auditory-motor transformations in speech. J Neurosci 31:2657-62
Ito, Takayuki; Ostry, David J (2010) Somatosensory contribution to motor learning due to facial skin deformation. J Neurophysiol 104:1230-8
Ito, Takayuki; Tiede, Mark; Ostry, David J (2009) Somatosensory function in speech perception. Proc Natl Acad Sci U S A 106:1245-8
Nasir, Sazzad M; Ostry, David J (2009) Auditory plasticity and speech motor learning. Proc Natl Acad Sci U S A 106:20470-5
Laboissiere, Rafael; Lametti, Daniel R; Ostry, David J (2009) Impedance control and its relation to precision in orofacial movement. J Neurophysiol 102:523-31
Nasir, Sazzad M; Ostry, David J (2008) Speech motor learning in profoundly deaf adults. Nat Neurosci 11:1217-22
Tremblay, Stephanie; Houle, Guillaume; Ostry, David J (2008) Specificity of speech motor learning. J Neurosci 28:2426-34

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