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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Kandhadai, Padmapriya Werker, Janet F. Danielson, D. Kyle Bruderer, Alison G. |
| Description | Author Affiliation: Bruderer AG ( School of Audiology and Speech Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada V6T1Z3); Danielson DK ( Department of Psychology, University of British Columbia, Vancouver, BC, Canada V6T1Z4.); Kandhadai P ( Department of Psychology, University of British Columbia, Vancouver, BC, Canada V6T1Z4.); Werker JF ( Department of Psychology, University of British Columbia, Vancouver, BC, Canada V6T1Z4.); |
| Abstract | The influence of speech production on speech perception is well established in adults. However, because adults have a long history of both perceiving and producing speech, the extent to which the perception-production linkage is due to experience is unknown. We addressed this issue by asking whether articulatory configurations can influence infants' speech perception performance. To eliminate influences from specific linguistic experience, we studied preverbal, 6-mo-old infants and tested the discrimination of a nonnative, and hence never-before-experienced, speech sound distinction. In three experimental studies, we used teething toys to control the position and movement of the tongue tip while the infants listened to the speech sounds. Using ultrasound imaging technology, we verified that the teething toys consistently and effectively constrained the movement and positioning of infants' tongues. With a looking-time procedure, we found that temporarily restraining infants' articulators impeded their discrimination of a nonnative consonant contrast but only when the relevant articulator was selectively restrained to prevent the movements associated with producing those sounds. Our results provide striking evidence that even before infants speak their first words and without specific listening experience, sensorimotor information from the articulators influences speech perception. These results transform theories of speech perception by suggesting that even at the initial stages of development, oral-motor movements influence speech sound discrimination. Moreover, an experimentally induced 'impairment' in articulator movement can compromise speech perception performance, raising the question of whether long-term oral-motor impairments may impact perceptual development. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 44 |
| Volume Number | 112 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2015-11-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Auditory Perception Physiology Language Development Sensorimotor Cortex Speech Perception Acoustic Stimulation Instrumentation Analysis Of Variance Child Development Infant Phonetics Speech Discrimination Tests Tongue Ultrasonography Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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