The developmental trajectory of vocal and event‐related potential responses to frequency‐altered auditory feedback |
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| Authors: | Nichole E. Scheerer Hanjun Liu Jeffery A. Jones |
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| Affiliation: | 1. Psychology Department and Laurier Centre for Cognitive Neuroscience, Wilfrid Laurier University, , Waterloo, ON, N2L 4A6 Canada;2. Department of Rehabilitation Medicine, The First Affiliated Hospital, Sun Yat‐sen University, , Guangzhou, China |
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| Abstract: | Speech motor control develops gradually as the acoustics of speech are mapped onto the positions and movements of the articulators. In this event‐related potential (ERP) study, children and adults aged 4–30 years produced vocalizations while exposed to frequency‐altered feedback. Vocal pitch variability and the latency of vocal responses were found to differ as a function of age. ERP responses indexed by the P1–N1–P2 complex were also modulated as a function of age. P1 amplitudes decreased with age, whereas N1 and P2 amplitudes increased with age. In addition, a correlation between vocal variability and N1 amplitudes was found, suggesting a complex interaction between behavioural and neurological responses to frequency‐altered feedback. These results suggest that the neural systems that integrate auditory feedback during vocal motor control undergo robust changes with age and physiological development. |
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| Keywords: | auditory feedback electroencephalography frequency‐altered feedback sensorimotor representations speech motor control |
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