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Audio-visual combination of syllables involves time-sensitive dynamics following from fusion failure
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In: ISSN: 2045-2322 ; EISSN: 2045-2322 ; Scientific Reports ; https://hal.archives-ouvertes.fr/hal-03039448 ; Scientific Reports, Nature Publishing Group, 2020, 10, ⟨10.1038/s41598-020-75201-7⟩ (2020)
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Audio-visual combination of syllables involves time-sensitive dynamics following from fusion failure
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In: ISSN: 2045-2322 ; Scientific Reports, Vol. 10, No 1 (2020) P. 18009 (2020)
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Audio-visual combination of syllables involves time-sensitive dynamics following from fusion failure
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In: Sci Rep (2020)
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Focal versus distributed temporal cortex activity for speech sound category assignment
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In: ISSN: 0027-8424 ; Proceedings of the National Academy of Sciences, Vol. 115, No 6 (2018) pp. E1299-E1308 (2018)
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Focal versus distributed temporal cortex activity for speech sound category assignment
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In: ISSN: 0027-8424 ; EISSN: 1091-6490 ; Proceedings of the National Academy of Sciences of the United States of America ; https://hal.archives-ouvertes.fr/hal-03041338 ; Proceedings of the National Academy of Sciences of the United States of America , National Academy of Sciences, 2017, 115 (6), pp.E1299 - E1308. ⟨10.1073/pnas.1714279115⟩ (2017)
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Abstract:
International audience ; Percepts and words can be decoded from distributed neural activity measures. However, the existence of widespread representations might conflict with the more classical notions of hierarchical processing and efficient coding, which are especially relevant in speech processing. Using fMRI and magnetoencephalography during syllable identification, we show that sensory and decisional activity colocalize to a restricted part of the posterior superior temporal gyrus (pSTG). Next, using intracortical recordings, we demonstrate that early and focal neural activity in this region distinguishes correct from incorrect decisions and can be machine-decoded to classify syllables. Crucially, significant machine decoding was possible from neuronal activity sampled across different regions of the temporal and frontal lobes, despite weak or absent sensory or decision-related responses. These findings show that speech-sound categorization relies on an efficient readout of focal pSTG neural activity, while more distributed activity patterns, although classifiable by machine learning, instead reflect collateral processes of sensory perception and decision.
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Keyword:
[SCCO]Cognitive science; categorical perception; decoding; encoding; multivariate pattern analysis; speech sounds
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URL: https://doi.org/10.1073/pnas.1714279115 https://hal.archives-ouvertes.fr/hal-03041338/file/Bouton-Chambon-et-al-PNAS-2018.pdf https://hal.archives-ouvertes.fr/hal-03041338 https://hal.archives-ouvertes.fr/hal-03041338/document
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Neural coding of prior expectations in hierarchical intention inference
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In: ISSN: 2045-2322 ; EISSN: 2045-2322 ; Scientific Reports ; https://hal.archives-ouvertes.fr/hal-03041336 ; Scientific Reports, Nature Publishing Group, 2017, 7 (1), pp.1278. ⟨10.1038/s41598-017-01414-y⟩ (2017)
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Atypical phonological processing impairs written word recognition in children with cochlear implants
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In: ISSN: 2327-3798 ; EISSN: 2327-3801 ; Language, Cognition and Neuroscience ; https://hal-amu.archives-ouvertes.fr/hal-01471061 ; Language, Cognition and Neuroscience, Taylor and Francis, 2015, ⟨10.1080/23273798.2014.1002796⟩ (2015)
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Stem and derivational-suffix processing during reading by French second and third graders
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In: ISSN: 0142-7164 ; EISSN: 1469-1817 ; Applied Psycholinguistics ; https://hal.archives-ouvertes.fr/hal-01440371 ; Applied Psycholinguistics, Cambridge University Press (CUP), 2012, 33 (1), pp.97-120. ⟨10.1017/S0142716411000282⟩ (2012)
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The influence of lexical knowledge on phoneme discrimination in deaf children with cochlear implants
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In: ISSN: 0167-6393 ; EISSN: 1872-7182 ; Speech Communication ; https://hal.archives-ouvertes.fr/hal-01440375 ; Speech Communication, Elsevier : North-Holland, 2012, 54 (2), pp.189-198. ⟨10.1016/j.specom.2011.08.002⟩ (2012)
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Reading and Reading-Related Skills in Children Using Cochlear Implants: Prospects for the Influence of Cued Speech
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In: ISSN: 1081-4159 ; EISSN: 1465-7325 ; Journal of Deaf Studies and Deaf Education ; https://hal.archives-ouvertes.fr/hal-01440406 ; Journal of Deaf Studies and Deaf Education, Oxford University Press (OUP), 2011, 16 (4), pp.458-473. ⟨10.1093/deafed/enr014⟩ (2011)
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Reading and Reading-Related Skills in Children Using Cochlear Implants: Prospects for the Influence of Cued Speech
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