Plasticity in the Human Speech Motor System Drives Changes in Speech Perception

Lametti, Daniel R.; Rochet-Capellan, Amélie; Neufeld, Emily; Shiller, Douglas M.; Ostry, David J.

doi:10.1523/jneurosci.0108-14.2014

Cited by 65 publications

(125 citation statements)

References 69 publications

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“…Instead, the shift in perception correlated with changes in the motoric behavior, supporting an articulatory basis for the perceptual shift. In line with the results of Lametti et al (2014b), changes in perception were variable and depended on the direction of the articulatory change, rather than universally according with the direction of the shifted auditory feedback.…”

Section: H Discussionsupporting

confidence: 80%

“…Furthermore, the direction of the observed effects suggests that the change in perceptual function corresponds to motoric changes rather than auditory feedback. Previous experiments have found that passive exposure to the recorded speech of a participant compensating in response to AAF fails to change perceptual function, regardless of whether the recorded speech is made by an average compensating speaker (Shiller et al, 2009) or consists of a random selection of stimuli take from several compensating speakers (Lametti et al, 2014b). However, these experiments differed from the present study in that they did not examine how passive listening to such stimuli may affect CFC.…”

Section: Methodscontrasting

confidence: 78%

“…As in other experiments (Shiller et al, 2009;Lametti et al, 2014b), no within-session significant correlations were found between production (standardized F2) and perception (centered response). The results seem to suggest that the effect of the altered feedback on perception only emerges when considering the differences in production and identification across the two sessions.…”

Section: Interactions Between Production and Identificationsupporting

confidence: 59%

“…As in Shiller et al (2009), the possibility that this effect was due to simple auditory exposure to shifted feedback was ruled out by inclusion of a passive listening control group. These two studies, Shiller et al (2009) and Lametti et al (2014b), suggest that altering motor-to-auditory mappings can alter the perception of speech sounds. In both studies, the authors suggest that their findings support the idea that production and perception are closely linked and that the motor system plays an active role during perception.…”

Section: Introductionmentioning

confidence: 99%

“…Lametti et al (2014b) performed two experiments in which participants were tested on categorization of vowel stimuli between "head" ([E]) and "had" ([ae]) [experiment (exp.) 1] or "head" and "hid" ([I]) (exp.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Sensorimotor adaptation affects perceptual compensation for coarticulation

Schuerman

Nagarajan

McQueen

et al. 2017

The Journal of the Acoustical Society of America

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A given speech sound will be realized differently depending on the context in which it is produced. Listeners have been found to compensate perceptually for these coarticulatory effects, yet it is unclear to what extent this effect depends on actual production experience. In this study, whether changes in motor-to-sound mappings induced by adaptation to altered auditory feedback can affect perceptual compensation for coarticulation is investigated. Specifically, whether altering how the vowel [i] is produced can affect the categorization of a stimulus continuum between an alveolar and a palatal fricative whose interpretation is dependent on vocalic context is tested. It was found that participants could be sorted into three groups based on whether they tended to oppose the direction of the shifted auditory feedback, to follow it, or a mixture of the two, and that these articulatory responses, not the shifted feedback the participants heard, correlated with changes in perception. These results indicate that sensorimotor adaptation to altered feedback can affect the perception of unaltered yet coarticulatorily-dependent speech sounds, suggesting a modulatory role of sensorimotor experience on speech perception.

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Section: H Discussionsupporting

confidence: 80%

Section: Methodscontrasting

confidence: 78%

Section: Interactions Between Production and Identificationsupporting

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Sensorimotor adaptation affects perceptual compensation for coarticulation

Schuerman

Nagarajan

McQueen

et al. 2017

The Journal of the Acoustical Society of America

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Neural bases of sensorimotor adaptation in the vocal motor system

Behroozmand

Sangtian

2018

Exp Brain Res

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The present study used event-related potential (ERP) recordings to investigate the neural mechanisms of sensorimotor adaptation in response to altered auditory feedback (AAF) during vocal production. 12 healthy speakers were tested under a vocal motor adaptation paradigm in which the fundamental frequency (F0) of their voice auditory feedback was pitch-shifted downward by one semi-tone (- 100 cents) during vowel vocalizations. Behavioral results revealed that subjects adapted to AAF by producing opposing (upward) responses to pitch-shift stimuli, and this adaptive behavior persisted after feedback alteration was removed (washout). We found that adaptation to AAF was accompanied by a significant increase in the amplitude of a parietal ERP activity elicited after the onset of vocalization. However, no such effect was observed for pre-motor ERPs elicited before vocalization onset. Moreover, we found that adaptive vocal responses were negatively correlated with ERPs over the parietal and positively correlated with those over the fronto-central areas after vocalization onset. These findings suggest that vocal motor adaptation is mediated by sensorimotor reprogramming of feedforward motor commands through incorporating auditory feedback, which is indexed by modulation of behavioral and ERP responses to AAF. We suggest that modulation of neural activities in the parietal cortex highlights its significance as a neural interface for sensorimotor integration and indicates its critical role in vocal motor adaptation. Our findings support the notion that the parietal mechanisms are involved in driving adaptive motor behavior to cope with unexpected changes in the sensory environment to accomplish communication goals during vocal production and motor control.

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Movements following force-field adaptation are aligned with altered sense of limb position

et al. 2019

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Previous work has shown that motor learning is associated with changes to both movements and to the somatosensory perception of limb position. In an earlier study that motivates the current work, it appeared that following washout trials, movements did not return to baseline but rather were aligned with associated changes to sensed limb position. Here we provide a systematic test of this relationship, examining the idea that adaptation-related changes to sensed limb position and to the path of the limb are linked, not only after washout trials but at all stages of the adaptation process. We used a force-field adaptation paradigm followed by washout trials in which subjects performed movements without visual feedback of the limb. Tests of sensed limb position were conducted at each phase of adaptation, specifically before and after baseline movements in a null field, after force-field adaptation, and following washout trials in a null field. As in previous work, sensed limb position changed in association with force-field adaptation. At each stage of adaptation, we observed a correlation between the sensed limb position and associated path of the limb. At a group level, there were differences between the clockwise and counterclockwise conditions. However, whenever there were changes in sensed limb position, movements following washout did not return to baseline. This suggests that adaptation in sensory and motor systems are not independent processes but rather sensorimotor adaptation is linked to sensory change. Sensory change and limb movement remain in alignment throughout adaptation such that the path of the limb is aligned with the altered sense of limb position.

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Plasticity in the Human Speech Motor System Drives Changes in Speech Perception

Cited by 65 publications

References 69 publications

Sensorimotor adaptation affects perceptual compensation for coarticulation

Sensorimotor adaptation affects perceptual compensation for coarticulation

Neural bases of sensorimotor adaptation in the vocal motor system

Movements following force-field adaptation are aligned with altered sense of limb position

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