Speech Perception Triggers Articulatory Action: Evidence From Mechanical Stimulation
Neuroimaging studies show that the brain articulatory motor system is activated during speech perception. These results, however, cannot determine whether the motor system is engaged in motor simulation (e.g., lip movement) or in non-motor computations. To gauge the causal role of the articulatory m...
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doaj-a71490fc14ad43778cc77ce9eca3cfce2020-11-25T03:04:28ZengFrontiers Media S.A.Frontiers in Communication2297-900X2020-05-01510.3389/fcomm.2020.00034533149Speech Perception Triggers Articulatory Action: Evidence From Mechanical StimulationIris Berent0Melanie Platt1Rachel Theodore2Evan Balaban3Peter J. Fried4Peter J. Fried5Alvaro Pascual-Leone6Alvaro Pascual-Leone7Alvaro Pascual-Leone8Department of Psychology, Northeastern University, Boston, MA, United StatesDepartment of Psychology, Northeastern University, Boston, MA, United StatesDepartment of Speech, Language, and Hearing Sciences, University of Connecticut, Mansfield, MA, United StatesDepartamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Getafe, SpainBerenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center, Boston, MA, United StatesDepartment of Neurology, Harvard Medical School, Boston, MA, United StatesDepartment of Neurology, Harvard Medical School, Boston, MA, United StatesDepartment of Neurology, Hinda and Arthur Marcus Institute for Aging Research and Center for Memory Health, Hebrew SeniorLife, Boston, MA, United StatesGuttmann Brain Health Institute, Institut Guttmann de Neurorehabilitació, Universitat Autonoma de Barcelona, Barcelona, SpainNeuroimaging studies show that the brain articulatory motor system is activated during speech perception. These results, however, cannot determine whether the motor system is engaged in motor simulation (e.g., lip movement) or in non-motor computations. To gauge the causal role of the articulatory motor system, here we examine the effect of mechanical stimulation. Participants heard speech tokens, ambiguous with respect to voicing—either labial (ba/pa) or coronal (da/ta)—while lightly biting on either the lips or tongue. Compared to incongruent stimulation (e.g., lips, with da/ta), congruent stimulation (e.g., tongue, with da/ta) shifted the voicing percepts, and improved discrimination sensitivity (d'). These results demonstrate that adults engage the articulatory motor system in speech perception even when it is irrelevant to response. The convergence with transcranial magnetic stimulation experiments suggests that speech perception engages articulatory action. These conclusions illuminate the links between embodiment and cognition.https://www.frontiersin.org/article/10.3389/fcomm.2020.00034/fullspeech perceptionembodimentmotor simulationphonetic categorizationvoicingTMS |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Iris Berent Melanie Platt Rachel Theodore Evan Balaban Peter J. Fried Peter J. Fried Alvaro Pascual-Leone Alvaro Pascual-Leone Alvaro Pascual-Leone |
spellingShingle |
Iris Berent Melanie Platt Rachel Theodore Evan Balaban Peter J. Fried Peter J. Fried Alvaro Pascual-Leone Alvaro Pascual-Leone Alvaro Pascual-Leone Speech Perception Triggers Articulatory Action: Evidence From Mechanical Stimulation Frontiers in Communication speech perception embodiment motor simulation phonetic categorization voicing TMS |
author_facet |
Iris Berent Melanie Platt Rachel Theodore Evan Balaban Peter J. Fried Peter J. Fried Alvaro Pascual-Leone Alvaro Pascual-Leone Alvaro Pascual-Leone |
author_sort |
Iris Berent |
title |
Speech Perception Triggers Articulatory Action: Evidence From Mechanical Stimulation |
title_short |
Speech Perception Triggers Articulatory Action: Evidence From Mechanical Stimulation |
title_full |
Speech Perception Triggers Articulatory Action: Evidence From Mechanical Stimulation |
title_fullStr |
Speech Perception Triggers Articulatory Action: Evidence From Mechanical Stimulation |
title_full_unstemmed |
Speech Perception Triggers Articulatory Action: Evidence From Mechanical Stimulation |
title_sort |
speech perception triggers articulatory action: evidence from mechanical stimulation |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Communication |
issn |
2297-900X |
publishDate |
2020-05-01 |
description |
Neuroimaging studies show that the brain articulatory motor system is activated during speech perception. These results, however, cannot determine whether the motor system is engaged in motor simulation (e.g., lip movement) or in non-motor computations. To gauge the causal role of the articulatory motor system, here we examine the effect of mechanical stimulation. Participants heard speech tokens, ambiguous with respect to voicing—either labial (ba/pa) or coronal (da/ta)—while lightly biting on either the lips or tongue. Compared to incongruent stimulation (e.g., lips, with da/ta), congruent stimulation (e.g., tongue, with da/ta) shifted the voicing percepts, and improved discrimination sensitivity (d'). These results demonstrate that adults engage the articulatory motor system in speech perception even when it is irrelevant to response. The convergence with transcranial magnetic stimulation experiments suggests that speech perception engages articulatory action. These conclusions illuminate the links between embodiment and cognition. |
topic |
speech perception embodiment motor simulation phonetic categorization voicing TMS |
url |
https://www.frontiersin.org/article/10.3389/fcomm.2020.00034/full |
work_keys_str_mv |
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