Search results for: Hung Thai-Van

Items from 1 to 20 out of 21 results

article

Early grammar‐building in French‐speaking deaf children with cochlear implants: A follow‐up corpus study

Marie‐Thérèse Le Normand, Hung Thai‐Van

International Journal of Language & Communication Disorders > 58 > 4 > 1204 - 1222

Background One of the most consistent findings reported in the paediatric cochlear implant (CI) literature is the heterogeneity of language performance observed more in grammatical morphology than in lexicon or pragmatics. As most of the corpus studies addressing these issues have been conducted in English, it is unclear whether their results can be generalized to other languages. In particular,...

article

Changes of spatial and temporal characteristics of dynamic postural control in children with typical neurodevelopment with age: Results of a multicenter pediatric study

Nathalie Goulème, Michel Debue, Karen Spruyt, Catherine Vanderveken, more

International Journal of Pediatric Otorhinolaryngology > 2018 > 113 > C > 272-280

The aim of this multicenter study is to investigate the effect of chronological age and gender in postural control.To approach an ecological model, we used a multicenter posturography assessment. We analyzed postural control with surface, mean velocity of center of pressure [CoP] and temporal analysis, with Postural Instability Index [PII] being a more sensitive parameter in postural evaluation. A...

article

A New Method to Test the Efficiency of Cochlear Implant Artifacts Removal From Auditory Evoked Potentials

Virginie Attina, Faten Mina, Pierre Stahl, Yvan Duroc, more

IEEE Transactions on Neural Systems and Rehabilitation Engineering > 2017 > 25 > 12 > 2453 - 2460

Auditory evoked potentials are of great interest to objectively evaluate the audition in cochlear implant (CI) recipients. However, these measures are impeded by CI stimulation electrical artifacts present in the EEG. In the first part, this paper investigates the use of a hybrid model approximating CI patient data. This model gives access to both uncontaminated and denoised data, thus allowing for...

chapter

Arguments in Favor of Auditory Reorganization in Human Subjects with Cochlear Damage

Hung Thai-Van, Damien Gabriel, Lionel Collet

Plasticity and Signal Representation in the Auditory System > Plasticity of the Auditory System in Man > 347-353

5. Conclusion Overall results confirm the improvement in frequency discrimination performance around the cutoff frequency in subjects with steeply sloping hearing loss. This effect does not appear to depend on the pattern of the hearing loss, as it can be observed in subjects with low-frequency, as well as notched hearing losses. Our findings, pointing to the steepness of the hearing loss and the...

chapter

Objective measures in cochlear implanted patients: A computational framework to evaluate artifact rejection methodologies

Faten Mina, Virginie Attina, Evelyne Veuillet, Eric Truy, more

2015 International Conference on Advances in Biomedical Engineering (ICABME) > 150 - 153

2015 International Conference on Advances in Biomedical Engineering (ICABME)

Auditory steady-state responses (ASSRs) constitute a reliable measure of auditory perception in normal hearing subjects. The use of these measures in cochlear implanted patients is hindered by the vast diffusion of the electrical cochlear stimulation artifact that highly contaminates EEG scalp recordings. Therefore, attenuating or moreover suppressing this artifact ahead of response detection is crucial...

article

Reliability of the Language ENvironment Analysis system (LENA™) in European French

Mélanie Canault, Marie-Thérèse Normand, Samy Foudil, Natalie Loundon, more

Behavior Research Methods > 2016 > 48 > 3 > 1109-1124

In this study, we examined the accuracy of the Language ENvironment Analysis (LENA) system in European French. LENA is a digital recording device with software that facilitates the collection and analysis of audio recordings from young children, providing automated measures of the speech overheard and produced by the child. Eighteen native French-speaking children, who were divided into six age groups...

article

Speech Auditory Brainstem Response through hearing aid stimulation

Ludovic Bellier, Evelyne Veuillet, Jean-François Vesson, Patrick Bouchet, more

Hearing Research > 2015 > 325 > Complete > 49-54

Millions of people across the world are hearing impaired, and rely on hearing aids to improve their everyday life. Objective audiometry could optimize hearing aid fitting, and is of particular interest for non-communicative patients. Speech Auditory Brainstem Response (speech ABR), a fine electrophysiological marker of speech encoding, is presently seen as a promising candidate for implementing objective...

article

Topographic recordings of auditory evoked potentials to speech: Subcortical and cortical responses

Ludovic Bellier, Patrick Bouchet, Arnaud Jeanvoine, Olivier Valentin, more

Psychophysiology > 52 > 4 > 594 - 599

Topographies of speech auditory brainstem response (speech ABR), a fine electrophysiological marker of speech encoding, have never been described. Yet, they could provide useful information to assess speech ABR generators and better characterize populations of interest (e.g., musicians, dyslexics). We present here a novel methodology of topographic speech ABR recording, using a 32‐channel low sampling...

article

Influence of coding strategies in electric-acoustic hearing: A simulation dedicated to EAS cochlear implant, in the presence of noise

Fabien Seldran, Stéphane Gallego, Hung Thai-Van, Christian Berger-Vachon

Applied Acoustics > 2014 > 76 > Complete > 300-309

This work deals with electric-acoustic stimulation (EAS), which keeps the low frequency acoustic information and electrically codes the high frequencies of the signal. One of the goals of the coding strategies is to limit the phenomenon of channel interaction, which can occur in CIs. The “N-of-M” strategy, where only a subset of electrode channels is stimulated, may be of advantage. Generally, this...

article

Unilateral deafness: A unique model for the investigation of functional plasticity mechanisms in the human auditory cortex

Hung Thai-Van

Clinical Neurophysiology > 2013 > 124 > 7 > 1267-1268

article

A model-based analysis of the “combined-stimulation advantage”

Fabien Seldran, Christophe Micheyl, Eric Truy, Christian Berger-Vachon, more

Hearing Research > 2011 > 282 > 1-2 > 252-264

Improvements in speech-recognition performance resulting from the addition of low-frequency information to electric (or vocoded) signals have attracted considerable interest in recent years. An important question is whether these improvements reflect a form of constructive perceptual interaction—whereby acoustic cues enhance the perception of electric or vocoded signals—or whether they can be explained...

article

Relationship Between Age of Hearing-Loss Onset, Hearing-Loss Duration, and Speech Recognition in Individuals with Severe-to-Profound High-Frequency Hearing Loss

Fabien Seldran, Stéphane Gallego, Christophe Micheyl, Evelyne Veuillet, more

Journal of the Association for Research in Otolaryngology > 2011 > 12 > 4 > 519-534

The factors responsible for interindividual differences in speech-understanding ability among hearing-impaired listeners are not well understood. Although audibility has been found to account for some of this variability, other factors may play a role. This study sought to examine whether part of the large interindividual variability of speech-recognition performance in individuals with severe-to-profound...

article

Distinguishing the processing of gestures from signs in deaf individuals: An fMRI study

Fatima T. Husain, Debra J. Patkin, Hung Thai-Van, Allen R. Braun, more

Brain Research > 2009 > 1276 > Complete > 140-150

Manual gestures occur on a continuum from co-speech gesticulations to conventionalized emblems to language signs. Our goal in the present study was to understand the neural bases of the processing of gestures along such a continuum. We studied four types of gestures, varying along linguistic and semantic dimensions: linguistic and meaningful American Sign Language (ASL), non-meaningful pseudo-ASL,...

article

An experimental parametric study

Idrick Akhoun, Annie Moulin, Arnaud Jeanvoine, Mikael Ménard, more

Journal of Neuroscience Methods > 2008 > 175 > 2 > 196-205

Speech elicited auditory brainstem responses (Speech ABR) have been shown to be an objective measurement of speech processing in the brainstem. Given the simultaneous stimulation and recording, and the similarities between the recording and the speech stimulus envelope, there is a great risk of artefactual recordings. This study sought to systematically investigate the source of artefactual contamination...

article

Relationship between loudness growth function and auditory steady-state response in normal-hearing subjects

Mikaël Ménard, Stéphane Gallégo, Christian Berger-Vachon, Lionel Collet, more

Hearing Research > 2008 > 235 > 1-2 > 105-113

The present study investigates the relationship between auditory steady-state responses (ASSRs) and loudness growth function. ASSR amplitudes were compared to the perceived loudness level at frequencies of 500 and 2000Hz in 11 normal-hearing subjects. As a first step, loudness growth function was estimated for the two test frequencies. Then ASSR amplitude was recorded for each of the two frequencies...

article

Enhanced frequency discrimination in hearing-impaired individuals: A review of perceptual correlates of central neural plasticity induced by cochlear damage

Hung Thai-Van, Christophe Micheyl, Arnaud Norena, Evelyne Veuillet, more

Hearing Research > 2007 > 233 > 1-2 > 14-22

Cochlear damages have been shown to induce changes in tonotopic maps in the central auditory system of animals; neurons deprived from peripheral inputs start to respond to stimuli with frequencies close to the cutoff frequency (Fc) or “edge” of the hearing loss, which then become over-represented at the neural level. Here, we review findings, which reveal a possible psychophysical correlate of such...

article

The pattern of auditory brainstem response wave V maturation in cochlear-implanted children

Hung Thai-Van, Sebastian Cozma, Florent Boutitie, François Disant, more

Clinical Neurophysiology > 2007 > 118 > 3 > 676-689

Maturation of acoustically evoked brainstem responses (ABR) in hearing children is not complete at birth but rather continues over the first two years of life. In particular, it has been established that the decrease in ABR wave V latency can be modeled as the sum of two decaying exponential functions with respective time-constants of 4 and 50 weeks [Eggermont, J.J., Salamy, A., 1988a. Maturational...

article

Modeling the relationship between psychophysical perception and electrically evoked compound action potential threshold in young cochlear implant recipients: clinical implications for implant fitting

Hung Thai-Van, Eric Truy, Basile Charasse, Florent Boutitie, more

Clinical Neurophysiology > 2004 > 115 > 12 > 2811-2824

Objective: In cochlear implant recipients, the threshold of the electrically evoked compound action potential (ECAP) has been shown to correlate with the perceptual detection threshold and maximum comfortable loudness levels (respectively, T- and C-levels) used for implant programming. Our general objective was to model the relationship between ECAP threshold and T/C-levels by taking into account...

article

Automatic analysis of auditory nerve electrically evoked compound action potential with an artificial neural network

Basile Charasse, Hung Thai-Van, Jean Marc Chanal, Christian Berger-Vachon, more

Artificial Intelligence In Medicine > 2004 > 31 > 3 > 221-229

The auditory nerve's electrically evoked compound action potential is recorded in deaf patients equipped with the Nucleus ⁽ R) 24 cochlear implant using a reverse telemetry system (NRT(TM)). Since the threshold of the NRT response (NRT-T) is thought to reflect the psychophysics needed for programming cochlear implants, efforts have been made by specialized management teams to develop its use...

article

Assessing auditory nerve recovery function with a modified subtraction method: results and mathematical modeling

Basile Charasse, Hung Thai-Van, Christian Berger-Vachon, Lionel Collet

Clinical Neurophysiology > 2003 > 114 > 7 > 1307-1315

Objective: One of the main difficulties in electrical compound action potential (ECAP) recordings is to reduce the stimulus artifact due to electrical stimulation. The neural response telemetry (NRT) system of the Nucleus 24 cochlear implant extracts the ECAP response using a forward-masking (standard) subtraction technique. However, it has been shown that this subtraction technique may distort the...

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INFONA - science communication portal

Search results for: Hung Thai-Van

Early grammar‐building in French‐speaking deaf children with cochlear implants: A follow‐up corpus study

Changes of spatial and temporal characteristics of dynamic postural control in children with typical neurodevelopment with age: Results of a multicenter pediatric study

A New Method to Test the Efficiency of Cochlear Implant Artifacts Removal From Auditory Evoked Potentials

Arguments in Favor of Auditory Reorganization in Human Subjects with Cochlear Damage

Objective measures in cochlear implanted patients: A computational framework to evaluate artifact rejection methodologies

Reliability of the Language ENvironment Analysis system (LENA™) in European French

Speech Auditory Brainstem Response through hearing aid stimulation

Topographic recordings of auditory evoked potentials to speech: Subcortical and cortical responses

Influence of coding strategies in electric-acoustic hearing: A simulation dedicated to EAS cochlear implant, in the presence of noise

Unilateral deafness: A unique model for the investigation of functional plasticity mechanisms in the human auditory cortex

A model-based analysis of the “combined-stimulation advantage”

Relationship Between Age of Hearing-Loss Onset, Hearing-Loss Duration, and Speech Recognition in Individuals with Severe-to-Profound High-Frequency Hearing Loss

Distinguishing the processing of gestures from signs in deaf individuals: An fMRI study

An experimental parametric study

Relationship between loudness growth function and auditory steady-state response in normal-hearing subjects

Enhanced frequency discrimination in hearing-impaired individuals: A review of perceptual correlates of central neural plasticity induced by cochlear damage

The pattern of auditory brainstem response wave V maturation in cochlear-implanted children

Modeling the relationship between psychophysical perception and electrically evoked compound action potential threshold in young cochlear implant recipients: clinical implications for implant fitting

Automatic analysis of auditory nerve electrically evoked compound action potential with an artificial neural network

Assessing auditory nerve recovery function with a modified subtraction method: results and mathematical modeling

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