Articulatory bias in speech categorization: Evidence from use-induced motor plasticity

Sato, Marc; Grabski, Krystyna; Glenberg, Arthur M.; Brisebois, Amélie; Basirat, Anahita; Ménard, Lucie; Cattaneo, Luigi

doi:10.1016/j.cortex.2011.03.009

Cited by 31 publications

(33 citation statements)

References 11 publications

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“…This suggests that while motor regions are recruited under some task conditions, their involvement does not necessarily result in better perceptual performance. Similar results were obtained in a purely behavioral experiment in which use-induced motor plasticity of speech articulators modulated bias but not discriminability of auditory syllables (Sato et al, 2011). The results are consistent with the motor system interacting with subject responses, but not aiding in perception, as d ′ would be expected to vary if this were the case.…”

Section: Discussionsupporting

confidence: 80%

Audiovisual Speech Integration Does Not Rely on the Motor System: Evidence from Articulatory Suppression, the McGurk Effect, and fMRI

Matchin

Groulx²,

Hickok³

2014

Journal of Cognitive Neuroscience

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Visual speech influences the perception of heard speech. A classic example of this is the McGurk effect, whereby an auditory /pa/ overlaid onto a visual /ka/ induces the fusion percept of /ta/. Recent behavioral and neuroimaging research has highlighted the importance of both articulatory representations and motor speech regions of the brain, particularly Broca’s area, in audiovisual (AV) speech integration. Alternatively, AV speech integration may be accomplished by the sensory system through multisensory integration in the posterior superior temporal sulcus (pSTS). We assessed the claims regarding the involvement of the motor system in AV integration in two experiments: (i) examining the effect of articulatory suppression on the McGurk effect, and (ii) determining if motor speech regions show an AV integration profile. The hypothesis regarding experiment (i) is that if the motor system plays a role in McGurk fusion, distracting the motor system through articulatory suppression should result in a reduction of McGurk fusion. The results of experiment (i) showed that articulatory suppression results in no such reduction, suggesting that the motor system is not responsible for the McGurk effect. The hypothesis of experiment (ii) was that if the brain activation to AV speech in motor regions (such as Broca’s area) reflects AV integration, the profile of activity should reflect AV integration: AV > AO (auditory-only) and AV > VO (visual-only). The results of experiment (ii) demonstrate that motor speech regions do not show this integration profile, while the pSTS does. Instead, activity in motor regions is task-dependent. The combined results suggest that AV speech integration does not rely on the motor system.

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Section: Discussionsupporting

confidence: 80%

Audiovisual Speech Integration Does Not Rely on the Motor System: Evidence from Articulatory Suppression, the McGurk Effect, and fMRI

Matchin

Groulx²,

Hickok³

2014

Journal of Cognitive Neuroscience

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“…Repetitive transcranial magnetic stimulation (rTMS) on the ventral premotor cortex produced small but significant modifications on phoneme identification in noise (Meister et al, 2007) or involving prior phonemic segmentation (Sato et al, 2009). TMS application at the level of specific articulators (lip vs tongue) in the primary motor cortex produced selective changes in phonetic categorization or discrimination of phonemes in noise in relation to the involved motor area (d' Ausilio et al, 2009;M€ ott€ onen and Watkins, 2009), and the same kind of effect was obtained by used-induced motor plasticity (Sato et al, 2011). Disruption of the lip representation by TMS even produced an effect on the electroencephalographic responses to auditory changes in the absence of acoustic noise (M€ ott€ onen et al, 2013).…”

mentioning

confidence: 79%

Interaction between articulatory gestures and inner speech in a counting task

Cefidekhanie

Savariaux

Sato

et al. 2014

The Journal of the Acoustical Society of America

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Interaction between covert and overt orofacial gestures has been poorly studied apart from old and rather qualitative experiments. The question deserves special interest in the context of the debate between auditory and motor theories of speech perception, where dual tasks may be of great interest. It is shown here that dynamic mandible and lips movement produced by a participant result in strong and stable perturbations to an inner speech counting task that has to be realized at the same time, while static orofacial configurations and static or dynamic manual actions produce no perturbation. This enables the authors to discuss how such kinds of orofacial perturbations could be introduced in dual task paradigms to assess the role of motor processes in speech perception.

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“…A second example of the generality of the motor adaptation procedure is provided by Sato et al (2008). Participants differentially adapted speech articulators by either pursing the lips 150 times or lifting the tongue to behind the teeth 150 times.…”

Section: Discussionmentioning

confidence: 99%

“…Consistent with the claim that we tapped a MM, the threshold was affected by number of objects transferred, direction of transfer, and similarity of the visual stimulus to the effector used to transfer the objects. Related studies have shown that similar forms of motor adaptation affect speech perception and language understanding (Glenberg et al, 2008; Sato et al, 2008). Thus, the adaptation procedure can be used to study human MMs function in multiple systems.…”

Section: Introductionmentioning

confidence: 97%

Knowing beans: human mirror mechanisms revealed through motor adaptation

Glenberg¹

2010

Front. Hum. Neurosci.

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Human mirror mechanisms (MMs) respond during both performed and observed action and appear to underlie action goal recognition. We introduce a behavioral procedure for discovering and clarifying functional MM properties: blindfolded participants repeatedly move beans either toward or away from themselves to induce motor adaptation. Then, the bias for perceiving direction of ambiguous visual movement in depth is measured. Bias is affected by (a) number of beans moved, (b) movement direction, and (c) similarity of the visual stimulus to the hand used to move beans. This cross-modal adaptation pattern supports both the validity of human MMs and functionality of our testing instrument. We also discuss related work that extends the motor adaptation paradigm to investigate contributions of MMs to speech perception and language comprehension.

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Articulatory bias in speech categorization: Evidence from use-induced motor plasticity

Cited by 31 publications

References 11 publications

Audiovisual Speech Integration Does Not Rely on the Motor System: Evidence from Articulatory Suppression, the McGurk Effect, and fMRI

Audiovisual Speech Integration Does Not Rely on the Motor System: Evidence from Articulatory Suppression, the McGurk Effect, and fMRI

Interaction between articulatory gestures and inner speech in a counting task

Knowing beans: human mirror mechanisms revealed through motor adaptation

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