15th International Congress of Phonetic Sciences (ICPhS-15)
This paper explores the role of somatosensory input in the achievement of speech targets. In a previous study (Tremblay et al., 2003), we showed that somatosensory input, independent of acoustics, plays a fundamental role in determining speech movements. This conclusion was based on the finding that subjects corrected for the effects of a velocity dependent mechanical load that significantly alters jaw kinematics - and hence somatosensory feedback - but has no effect on acoustic output. However, in work to date, the patterns of adaptation that we have observed have been specific to movements involving a vowel-to-vowel transition. To further investigate the latter outcome, the present study explores patterns of adaptation by manipulating the location of the vowel-to-vowel transition within the speech utterance. The present results are consistent with the findings of the previous study: adaptation to a mechanical load is only achieved in portions of speech movements that are associated with a vowel-to-vowel transition.
Bibliographic reference. Tremblay, Stéphanie / Ostry, David J. (2003): "Evidence for the use of somatosensory feedback in speech production", In ICPhS-15, 3133-3136.