Movement goals and feedback and feedforward control mechanisms in speech production

Studies of speech motor control are described that support a theoretical framework in which fundamental control variables for phonemic movements are multi-dimensional regions in auditory and somatosensory spaces. Auditory feedback is used to acquire and maintain auditory goals and in the development...

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Bibliographic Details
Published in:	Journal of neurolinguistics 2012-09, Vol.25 (5), p.382-407
Main Author:	Perkell, Joseph S.
Format:	Article
Language:	eng
Subjects:	Auditory discrimination Auditory stimuli Feedback Feedback control Feedforward control Motor task performance Phonemic goals Sensory goals speech Speech motor control Speech perception Speech production
Online Access:	Get full text
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Summary:	Studies of speech motor control are described that support a theoretical framework in which fundamental control variables for phonemic movements are multi-dimensional regions in auditory and somatosensory spaces. Auditory feedback is used to acquire and maintain auditory goals and in the development and function of feedback and feedforward control mechanisms. Several lines of evidence support the idea that speakers with more acute sensory discrimination acquire more distinct goal regions and therefore produce speech sounds with greater contrast. Feedback modification findings indicate that fluently produced sound sequences are encoded as feedforward commands, and feedback control serves to correct mismatches between expected and produced sensory consequences.
ISSN:	0911-6044 1873-8052