Speech imagery recalibrates speech-perception boundaries

Scott, Mark

doi:10.3758/s13414-016-1087-6

Cited by 11 publications

(8 citation statements)

References 47 publications

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“…Whereas phonetic recalibration may result from various natural or acquired stimulus mappings, different types of mappings may differ in the strength of the resulting recalibration effects. For example, recalibration effects are typically reported to be stronger for lipread speech, as compared to lexical speech information 33 , mouthing or speech imagery 24 . Similarly, lipread speech has a stronger effect than visual text 25 , 34 .…”

Section: Discussionmentioning

confidence: 99%

“…So far, most recalibration studies have exploited the naturally evolved audiovisual association between spoken language and lip movements 21 , 22 . Other stimuli that have been shown to recalibrate listener’s perceptual speech boundaries include lexical (spoken word) context 23 , and more recently, overt or imagined speech articulation 24 , and written text 25 . During text-based recalibration, repeated pairing of the ambiguous /a?a/ sound to the text ‘aba’ (Fig.…”

Section: Introductionmentioning

confidence: 99%

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Reading-induced shifts of perceptual speech representations in auditory cortex

Bonte

Correia

Keetels

et al. 2017

Sci Rep

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Learning to read requires the formation of efficient neural associations between written and spoken language. Whether these associations influence the auditory cortical representation of speech remains unknown. Here we address this question by combining multivariate functional MRI analysis and a newly-developed ‘text-based recalibration’ paradigm. In this paradigm, the pairing of visual text and ambiguous speech sounds shifts (i.e. recalibrates) the perceptual interpretation of the ambiguous sounds in subsequent auditory-only trials. We show that it is possible to retrieve the text-induced perceptual interpretation from fMRI activity patterns in the posterior superior temporal cortex. Furthermore, this auditory cortical region showed significant functional connectivity with the inferior parietal lobe (IPL) during the pairing of text with ambiguous speech. Our findings indicate that reading-related audiovisual mappings can adjust the auditory cortical representation of speech in typically reading adults. Additionally, they suggest the involvement of the IPL in audiovisual and/or higher-order perceptual processes leading to this adjustment. When applied in typical and dyslexic readers of different ages, our text-based recalibration paradigm may reveal relevant aspects of perceptual learning and plasticity during successful and failing reading development.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reading-induced shifts of perceptual speech representations in auditory cortex

Bonte

Correia

Keetels

et al. 2017

Sci Rep

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“…/a?a/ mapped onto /aba/). A number of visual stimuli have been shown to elicit recalibration including lip-read speech ( Bertelson et al, 2003 , Ullas et al, 2020a , Vroomen and Baart, 2012 ), spoken word context ( Norris et al, 2003 , Ullas et al, 2020a ), overt speech articulation ( Scott, 2016 ), and most recently, text ( Bonte et al, 2017 , Keetels et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Cortical responses to letters and ambiguous speech vary with reading skills in dyslexic and typically reading children

Romanovska

Janssen

Bonte

2021

NeuroImage: Clinical

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“…A complementary approach to investigate letter-speech sound coupling can be found in (phonetic) recalibration paradigms, in which the perceived identity of an ambiguous speech sound is biased in the direction of previously presented disambiguating context information. This context information can consist of lip-read speech (Bertelson et al, 2003; Vroomen and Baart, 2012), lexical (spoken word) context (Norris et al, 2003), overt or imagined speech articulation (Scott, 2016), or, most relevant for our current study, visual text (Bonte et al, 2017; Keetels et al, 2018). In the classical recalibration paradigm an ambiguous speech sound /a?a/ midway between /aba/ and /ada/ is combined with a disambiguating video of a speaker articulating ‘aba’ or ‘ada’ to bias the perception of the ambiguous sound toward the video.…”

Section: Introductionmentioning

confidence: 99%

Reading-Induced Shifts in Speech Perception in Dyslexic and Typically Reading Children

2019

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One of the proposed mechanisms underlying reading difficulties observed in developmental dyslexia is impaired mapping of visual to auditory speech representations. We investigate these mappings in 20 typically reading and 20 children with dyslexia aged 8–10 years using text-based recalibration. In this paradigm, the pairing of visual text and ambiguous speech sounds shifts (recalibrates) the participant’s perception of the ambiguous speech in subsequent auditory-only post-test trials. Recent research in adults demonstrated this text-induced perceptual shift in typical, but not in dyslexic readers. Our current results instead show significant text-induced recalibration in both typically reading children and children with dyslexia. The strength of this effect was significantly linked to the strength of perceptual adaptation effects in children with dyslexia but not typically reading children. Furthermore, additional analyses in a sample of typically reading children of various reading levels revealed a significant link between recalibration and phoneme categorization. Taken together, our study highlights the importance of considering dynamic developmental changes in reading, letter-speech sound coupling and speech perception when investigating group differences between typical and dyslexic readers.

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Speech imagery recalibrates speech-perception boundaries

Cited by 11 publications

References 47 publications

Reading-induced shifts of perceptual speech representations in auditory cortex

Reading-induced shifts of perceptual speech representations in auditory cortex

Cortical responses to letters and ambiguous speech vary with reading skills in dyslexic and typically reading children

Reading-Induced Shifts in Speech Perception in Dyslexic and Typically Reading Children

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