title: The developmental trajectory of vocal and event-related potential responses to frequency-altered auditory feedback.
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.
authors.affiliation: Psychology Department and Laurier Centre for Cognitive Neuroscience, Wilfrid Laurier University, Waterloo, ON, N2L 4A6, Canada.
authors.forename: Nichole E
authors.initials: NE
authors.lastname: Scheerer
authors.forename: Hanjun
authors.initials: H
authors.lastname: Liu
authors.forename: Jeffery A
authors.initials: JA
authors.lastname: Jones
mesh_terms: D000293:Adolescent; D041923:Adolescent Development; D000328:Adult; D002540:Cerebral Cortex / Q000254:growth & development / Q000502:physiology*; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D004569:Electroencephalography; D005071:Evoked Potentials; D056228:Feedback, Sensory; D005260:Female; D006801:Humans; D008297:Male; D010898:Pitch Perception; D013016:Sound; D013060:Speech / Q000502:physiology*; D014831:Voice
keywords: auditory feedback; electroencephalography; frequency-altered feedback; sensorimotor representations; speech motor control