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Imagined speech can be decoded from low- and cross-frequency intracranial EEG features
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In: ISSN: 2041-1723 ; Nature communications, Vol. 13, No 1 (2022) P. 48 (2022)
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Musical Sophistication and Speech Auditory-Motor Coupling: Easy Tests for Quick Answers
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In: Front Neurosci (2022)
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Imagined speech can be decoded from low- and cross-frequency intracranial EEG features
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In: Nat Commun (2022)
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Neural dynamics of phoneme sequencing in real speech jointly encode order and invariant content
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In: https://hal.archives-ouvertes.fr/hal-03089733 ; 2020 (2020)
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On Multi-Scale Processing in The Auditory System
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In: Forum Acusticum ; https://hal.archives-ouvertes.fr/hal-03235920 ; Forum Acusticum, Dec 2020, Lyon, France. pp.1407-1408, ⟨10.48465/fa.2020.0640⟩ (2020)
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Abstract:
International audience ; Natural sounds, music, and vocal sounds have a rich temporal structure over multiple timescales, and behaviorally relevant acoustic information is usually carried on more than one timescale. For example, speech conveys linguistic information at several scales: 20-80 ms for phonemic information, 100-300 ms for syllabic information, and more than 1000 ms for intonation information. Therefore, successful perceptual analysis of auditory signals requires the auditory system to extract acoustic information at multiple scales. This presents a specific problem: how to process different, co-occurring rates of information across multiple timescales? And, by extension, how can the requirements on temporal and spectral resolution simultaneously be met? I presented a series of studies, combining with psychophysics and neurophysiology, to investigate how the auditory system processes temporal information on multiple scales. The first study tests behaviorally how listeners reconcile information on local and global scales to form a holistic percept of sounds. This study revealed that there are different auditory processes on the local and global scales. The second study tests the neural substrate of the multi-scale processing in the auditory system. In this study, using MEG, we found that the auditory system mainly codes acoustic information on two discrete timescales: ~ 200 ms and ~ 30 ms. The third study answers the question whether the timescales found in the second study originate from stimuli-driven neural activities or from an intrinsic processing scheme in the auditory system. We found that the multi-scale processing is an intrinsic process instead of a stimulus-driven phenomenon. Our findings provide a novel perspective? acoustic information of all timescales is discretised into two discrete temporal chunks for further perceptual analysis.
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Keyword:
[PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]; [PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph]; Integration-resolution; Local-Global; Temporal Processing
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URL: https://hal.archives-ouvertes.fr/hal-03235920/file/000640.pdf
https://hal.archives-ouvertes.fr/hal-03235920/document
https://hal.archives-ouvertes.fr/hal-03235920
https://doi.org/10.48465/fa.2020.0640
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Asymmetric sampling in human auditory cortex reveals spectral processing hierarchy
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In: ISSN: 1544-9173 ; EISSN: 1545-7885 ; PLoS Biology ; https://hal.archives-ouvertes.fr/hal-02496552 ; PLoS Biology, Public Library of Science, 2020, 18 (3), pp.e3000207. ⟨10.1371/journal.pbio.3000207⟩ (2020)
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| 10 |
Asymmetric sampling in human auditory cortex reveals spectral processing hierarchy
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| 11 |
Working Memory and syntactic complexity in Brazilian Portuguese and English
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In: North East Linguistics Society (2020)
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| 12 |
Spectrotemporal modulation provides a unifying framework for auditory cortical asymmetries
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| 13 |
Spontaneous synchronization to speech reveals neural mechanisms facilitating language learning
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| 15 |
Cortical tracking of linguistic structures: the role of covert prosody ...
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| 17 |
The processing of biologically plausible and implausible forms in American Sign Language: evidence for perceptual tuning ...
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| 18 |
The processing of biologically plausible and implausible forms in American Sign Language: evidence for perceptual tuning ...
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The processing of biologically plausible and implausible forms in American Sign Language: evidence for perceptual tuning ...
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The processing of biologically plausible and implausible forms in American Sign Language: evidence for perceptual tuning ...
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