title: Speech motor learning changes the neural response to both auditory and somatosensory signals.
abstract: In the present paper, we present evidence for the idea that speech motor learning is accompanied by changes to the neural coding of both auditory and somatosensory stimuli. Participants in our experiments undergo adaptation to altered auditory feedback, an experimental model of speech motor learning which like visuo-motor adaptation in limb movement, requires that participants change their speech movements and associated somatosensory inputs to correct for systematic real-time changes to auditory feedback. We measure the sensory effects of adaptation by examining changes to auditory and somatosensory event-related responses. We find that adaptation results in progressive changes to speech acoustical outputs that serve to correct for the perturbation. We also observe changes in both auditory and somatosensory event-related responses that are correlated with the magnitude of adaptation. These results indicate that sensory change occurs in conjunction with the processes involved in speech motor adaptation.
authors.affiliation: Haskins Laboratories, 300 George Street, New Haven, CT, 06511, USA.|CNRS, GIPSA-LAB, 11 rue des Mathématiques, Grenoble Campus BP46, F-38402, Saint Martin D'heres Cedex, France.|Univ. Grenoble-Alpes, F-38040 Grenoble, France.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Ito
authors.affiliation: Haskins Laboratories, 300 George Street, New Haven, CT, 06511, USA.
authors.forename: Joshua H
authors.initials: JH
authors.lastname: Coppola
authors.affiliation: Haskins Laboratories, 300 George Street, New Haven, CT, 06511, USA.|McGill University, 1205 Dr. Penfield Avenue, Montréal, QC, H3A 1B1, Canada.
authors.forename: David J
authors.initials: DJ
authors.lastname: Ostry
mesh_terms: D000161:Acoustic Stimulation; D056228:Feedback, Sensory; D005260:Female; D006801:Humans; D008297:Male; D013003:Somatosensory Cortex / Q000502:physiology*; D013060:Speech / Q000502:physiology*; D013061:Speech Acoustics; D014706:Verbal Learning / Q000502:physiology*