15th International Congress of Phonetic Sciences (ICPhS-15)

Barcelona, Spain
August 3-9, 2003

Evidence for the Use of Somatosensory Feedback in Speech Production

Stéphanie Tremblay, David J. Ostry

McGill University, Canada

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.

Full Paper

Bibliographic reference.  Tremblay, Stéphanie / Ostry, David J. (2003): "Evidence for the use of somatosensory feedback in speech production", In ICPhS-15, 3133-3136.