Multistable syllables as enacted percepts: a source of an asymmetric bias in the verbal transformation effect

Sato, Marc; Schwartz, Jean‐Luc; Abry, Christian; Cathiard, Marie‐Agnès; Lœvenbruck, Hélène

doi:10.3758/bf03193690

Cited by 19 publications

(25 citation statements)

References 39 publications

(70 reference statements)

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“…However, a previous verbal transformation experiment using the same material showed that the main organization of the reported transformations for both speech sequences was that of a pairwise coupling between /pata/ and /tapa/ syllables, although various others transformations were reported (Sato et al, 2007b). From these results, the reported transformations in the present study are likely to be strongly linked to a syllabic parsing process, rather than to auditory streaming or lexical competition mechanisms, as also sometimes observed in verbal transformations (see Sato et al, 2006Sato et al, , 2007aSato et al, , 2007b.…”

Section: Discussionsupporting

confidence: 76%

“…While verbal transformations have initially been studied as a pure auditory perceptual effect, they appear to occur also when subjects repeatedly utter the speech stimulus in both an overt and a covert mode (Reisberg et al, 1989;Smith et al, 1995;Sato et al, 2006). With this production procedure, the number of verbal transformations has been shown to gradually decrease from a condition of complete externalization to one of complete internalization, when subarticulation is blocked by a concurrent articulatory task, through a condition of partial externalization (i.e., whispering, mouthing; Reisberg et al, 1989).…”

Section: Introductionmentioning

confidence: 99%

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Parieto-frontal gamma band activity during the perceptual emergence of speech forms

et al. 2008

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The multistable perception of speech refers to the perceptual changes experienced while listening to a speech form cycled in rapid and continuous repetition, the so-called Verbal Transformation Effect. Because distinct interpretations of the same repeated stimulus alternate spontaneously, this effect provides an invaluable tool to examine how speech percepts are formed in the listener's mind. In order to track the temporal dynamics of brain activity specifically linked to perceptual changes, intracerebral EEG activity was recorded from two implanted epileptic patients while performing a verbal transformation task. To this aim, they were asked to carefully listen to a speech sequence played repeatedly and to press a button whenever they perceived a change in the repeated utterance. For both patients, 300-800 ms prior to the reported perceptual transitions, high frequency activity in the gamma band range (> 40 Hz) was observed within the left inferior frontal and supramarginal gyri. An additional auditory decision task was used to rule out the possibility that the increased gamma band activity was due to the patients' motor responses. These results suggest that articulatory-based representations play a key part in the endogenously driven emergence of auditory speech percepts. The findings are interpreted in relation to theories assuming a link between perception and action in the human speech processing system.

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Section: Discussionsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Parieto-frontal gamma band activity during the perceptual emergence of speech forms

et al. 2008

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“…In this sense, the LC sequence is more stable than the CL sequence. Sato et al (2006) found that also in perception LCsequences are more stable (transform less) and more attractive (attract more transformations) compared to CL-sequences. Similar perceptual changes have been frequently found and are referred to as the verbal transformation effect.…”

Section: Interarticulatory Coordination In Speechmentioning

confidence: 99%

“…Similar perceptual changes have been frequently found and are referred to as the verbal transformation effect. Repeating continuously the English word -life‖, for instance, can induce a shift from the perception of -life‖ to the perception of -fly‖ (for an overview, see Sato et al, 2006). This brief review has illustrated that the study of the coordination among effectors is probably the area in which the closest theoretical and methodological synergy exists between approaches to limb and to speech articulatory movements.…”

Section: Interarticulatory Coordination In Speechmentioning

confidence: 99%

Limb versus Speech Motor Control: A Conceptual Review

Britta¹,

Fuchs²,

Perrier³

et al. 2011

Motor Control

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This paper presents a comparative conceptual review of speech and limb motor control.Speech is essentially cognitive in nature and constrained by the rules of language, while limb movement is often oriented to physical objects. We discuss the issue of intrinsic vs. extrinsic variables underlying the representations of motor goals as well as whether motor goals specify terminal postures or entire trajectories. Timing and coordination is recognized as an area of strong interchange between the two domains. Although coordination among different motor acts within a sequence and co-articulation are central to speech motor control, they have received only limited attention in manipulatory movements. The biomechanics of speech production is characterized by the presence of soft tissue, a variable number of degrees of freedom, and the challenges of high rates of production, while limb movements deal more typically with inertial constraints from manipulated objects. This comparative review thus leads us to identify many strands of thinking that are shared across the two domains, but also points us to issues on which approaches in the two domains differ. We conclude that conceptual interchange between the fields of limb and speech motor control has been useful in the past and promises continued benefit.

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“…In a first series of experiments, Sato et al (2006) wondered whether articulatory coherence could be shown to display a role in the VTE. For this aim, they focused on a French nonsense analogous of the "life"-"fly" transform, in which a "pse" non-word transforms into "sep" and the other way round.…”

Section: Iii3 the Role Of Articulatory Coherence In The Vtementioning

confidence: 99%

The Perception-for-Action-Control Theory (PACT): A perceptuo-motor theory of speech perception

Schwartz¹,

Basirat²,

Ménard³

et al. 2012

Journal of Neurolinguistics

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160

138

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It is an old-standing debate in the field of speech communication to determine whether speech perception involves auditory or multisensory representations and processing, independently on any procedural knowledge about the production of speech units or on the contrary if it is based on a recoding of the sensory input in terms of articulatory gestures, as posited in the Motor Theory of Speech Perception. The discovery of mirror neurons in the last 15 years has strongly renewed the interest for motor theories. However, while these neurophysiological data clearly reinforce the plausibility of the role of motor properties in perception, it could lead in our view to incorrectly deemphasise the role of perceptual shaping, crucial in speech communication. The so-called Perception-for-Action-Control Theory (PACT) aims at defining a theoretical framework connecting in a principled way perceptual shaping and motor procedural knowledge in speech multisensory processing in the human brain. In this paper, the theory is presented in details. It is described how this theory fits with behavioural and linguistic data, concerning firstly vowel systems in human languages, and secondly the perceptual organization of the speech scene. Finally a neurocomputational framework is presented in connection with recent data on the possible functional role of the motor system in speech perception.Keywords: perceptuo-motor interaction; speech perception; vowel perception; perceptual organisation; multisensory interactions; neurocomputational model; dorsal route IntroductionIt is an old-standing debate in the field of speech communication to determine whether speech perception involves auditory or multisensory representations and processing, independently on any procedural knowledge about the production of speech units (for a review, Diehl et al., 2004); or on the contrary if it is based on a recoding of the sensory input in terms of articulatory gestures, as posited in the Motor Theory of Speech Perception (Liberman et al., 1962;Liberman and Mattingly 1985;Liberman & Whalen, 2000). The discovery of mirror neurons (for reviews, Rizzolatti et al., 2001;Rizzolatti & Craighero, 2004) in the last 15 years has strongly renewed the interest for motor theories. However, while these neurophysiological data clearly reinforce the plausibility of the role of motor properties in perception, it could lead in our view to incorrectly deemphasise the role of perceptual shaping, crucial in speech communication. The so-called Perception-for-Action-Control Theory (PACT) aims at defining a theoretical framework connecting in a principled way perceptual shaping and motor procedural knowledge in speech multisensory processing in the human brain. In the following, the theory will be presented in details in Section I.Sections II and III will describe how this theory fits with behavioural and linguistic data, concerning firstly vowel systems in human languages, and secondly the perceptual organization of the speech scene. Section IV will consider a neuro-c...

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Multistable syllables as enacted percepts: a source of an asymmetric bias in the verbal transformation effect

Cited by 19 publications

References 39 publications

Parieto-frontal gamma band activity during the perceptual emergence of speech forms

Parieto-frontal gamma band activity during the perceptual emergence of speech forms

Limb versus Speech Motor Control: A Conceptual Review

The Perception-for-Action-Control Theory (PACT): A perceptuo-motor theory of speech perception

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