UMR 7320 : Bases, Corpus, Langage

titre: Densifying Optodes Montage to Enhance Cerebellar fNIRS
auteur: Giulia Rocco, Edouard Delaire, Stephen Ramanoël, Olivier Meste, Marie-Noële Magnié-Mauro, Christophe Grova, Jerome Lebrun
article: 2022 Biennial meeting of the Society of Functional Near-Infrared Spectroscopy (fNIRS 2022), Society of Functional Near-Infrared Spectroscopy, Oct 2022, Boston (MA), United States. ⟨10.5281/zenodo.7009822⟩
annee_publi: 2022
resume: In this preliminary study, we introduce the use of personalized high-density optodes montage for cerebellar fNIRS acquisitions. One subject performed left or right finger tapping tasks consecutively with fNIRS and fMRI. Conclusive ipsilateral cerebellar activations were observed in the fNIRS HRF and supported by strong clusters in the fMRI.
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titre: When fNIRS meets fMRI to complement cerebellar exploration
auteur: Giulia Rocco, Stephen Ramanoël, Christophe N Habas, Angelo Arleo, Olivier Meste, Marie-Noële Magnié-Mauro, Jerome Lebrun
article: IEEE International Symposium on Biomedical Imaging (ISBI 2022), IEEE Signal Processing Society (SPS); IEEE Engineering in Medicine and Biology Society (EMBS), Mar 2022, Kolkata, India. ⟨10.13140/RG.2.2.14254.18245⟩
annee_publi: 2022
resume: Towards an fMRI validation of our previous fNIRS-based explorations of cerebellar activity [Rocco et al. EMBC 2021], we introduce here a joint sequential fNIRS/fMRI study based on finger tapping that provides both finer time and space granularities for the assessment of BOLD effect in the cerebellum.
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titre: Interactive Human Interface for ERP Component Extraction from Gifted Children
auteur: Kawther Benharrath, Amine Ben Slama, Balkine Khadoumi, Mounir Sayadi, Olivier Meste, Sophie Guetat, Jerome Lebrun, Marie-Noële Magnié-Mauro
article: Intelligent Automation and Soft Computing, 2022, Intelligent Automation & Soft Computing, 33 (2), pp.1063-1080. ⟨10.32604/iasc.2022.023446⟩
annee_publi: 2022
resume: In the last century, scientists started to give importance to gifted children (GC) and to understand their behavior. Since then, research has pursued the various categories of these children and their early diagnosis in order to find the best control of their skills. Therefore, most researchers focus on recent advances in electroencephalogram (EEG) and cognitive events. The event-related brain potentials (ERPs) technique is generally used in the cognitive neuroscience process. However, it is still a challenge to extract these potentials from a few trials of electroencephalogram (EEG) data. The N400 ERP component is an important part of the studies of cerebral science and clinical neuropsychology. In this ongoing study, a new experimentation protocol and human tablet interactive equipment were assigned to analyze the brain activity. A combination of two techniques the Integral Shape Averaging (ISA) and Integral Shape Averaging applied on belated window (ISA-BW) was built to extract the semantic component from a single trial and to enhance the signal-to-noise ratio (S/N). The results obtained were compared with the most used method in the medical field Grand Average (GA). In addition, a statistical study was performed on a database for accurate characterization of children using feature reduction. The experimental results show the efficiency of the suggested approach which manifests the discriminant statistical feature extraction (J = 2.032) from ERP component dataset that can contribute to the recognition of GC. The proposed method is reinforced by a pilot device processed by an electrical engineer to improve the protocol simulation. The experimental procedure proves that the present approach is very interesting and helpful for improving the identification of such gifted children.
typdoc: Article dans une revue
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titre: Que sait-on en 2021 des particularités neurophysiologiques des HPI et de leurs corrélats ?
auteur: Marie-Noële Magnié-Mauro
article: L’ANPEIP, 50 ans d’actions pour les enfants à haut potentiel intellectuel (HPI), Nov 2021, Nice, France
annee_publi: 2021
typdoc: Communication dans un congrès
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titre: Présentation du Prix Nobel de Médecine 2021
auteur: Marie-Noële Magnié-Mauro
article: 7ème Journée Nobel de Nice, Nov 2021, Nice, France
annee_publi: 2021
typdoc: Communication dans un congrès
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titre: Single-Trial Detection of Event-Related Potentials with Integral Shape Averaging: An Application to the Elusive N400
auteur: Giulia Rocco, Hervé Rix, Jerome Lebrun, Sophie Guetat, Lucile Chanquoy, Olivier Meste, Marie-Noële Magnié-Mauro
article: 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC 2021), IEEE, Nov 2021, Mexico (virtual), Mexico. pp.1022-1025, ⟨10.1109/EMBC46164.2021.9630271⟩
annee_publi: 2021
resume: The estimation of Event-Related Potentials (ERPs) from the ambient EEG is a difficult task, usually achieved through the synchronous averaging of an extensive series of trials. However, this technique has some caveats: the ERPs have to be strictly time-locked with similar shape, i.e. emitted with the same latency and the same profile, with minor fluctuations of their amplitudes. Also, the method requires a huge number of valid trials (~100) to efficiently raise the ERPs from the EEG trials. In the case of cognitive ERPs, as with the N400, the delivered stimulus has to be different for each trial, the latencies are varying, and the number of available trials is usually low. In this paper, an alternative method, coined Integral Shape Averaging (ISA) and its derivatives are detailed. ISA is robust to varying latencies and affine transforms of shape. Furthermore, a new method coined ISAD can be derived to extract ERPs even from a single trial experiment. The aim here is to illustrate the potential of ISAD for N400 component extraction on real EEG data, with emphasis on its general applicability for ERPs computation and its major assets like reduced experimental protocol. Some insights are also given on its potential use to study ERP variability, through shape and latency.Clinical Relevance— The proposed algorithm aims to be a helpful tool in clinical practice to analyze and interpret evoked responses in real experimental settings, especially for particularities in neurology.
typdoc: Communication dans un congrès
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titre: A Chiral fNIRS Spotlight on Cerebellar Activation in a Finger Tapping Task
auteur: Giulia Rocco, Jerome Lebrun, Olivier Meste, Marie-Noële Magnié-Mauro
article: 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC 2021), IEEE, Nov 2021, Mexico (virtual), Mexico. pp.1018-1021, ⟨10.1109/EMBC46164.2021.9629565⟩
annee_publi: 2021
resume: Functional Magnetic Resonance Imaging (fMRI) has been so far the golden standard to study the functional aspects of the cerebellum. In this paper, a low-cost alternative imaging, i.e. functional Near-Infrared Spectroscopy (fNIRS) is demonstrated to achieve successful measurements of the cerebellar hemodynamics towards the challenging observation of motor and cognitive processes at the cerebellar level. The excitation and reception optodes need to be properly placed to circumvent a major hindering from the shielding by the neck muscles. A simple experimental protocol, i.e. finger tapping task, was implemented to observe the subject’s engagement and the presence of functional asymmetries. Marked differences among subjects with different levels of lateralization were clearly noticed in terms of activation and latencies, together with peaks in the hemodynamic response following neural activation. These preliminary results suggest also differences in the hemodynamic behavior between the brain and the cerebellum and encourage future and extended analysis in this direction.Clinical Relevance—This establishes the possibility to use a novel technique (fNIRS) to study cerebellar hemodynamics instead of fMRI.
typdoc: Communication dans un congrès
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titre: Asymmetries in Cerebellar Activation during Finger Movements: A Functional Near-Infrared Spectroscopy Study
auteur: Giulia Rocco, Jerome Lebrun, Olivier Meste, Marie-Noële Magnie-Mauro
article: Acta Physiologica: 4th Congress of Physiology and Integrative Biology, 88th Congress of French Physiological Society, Faculté de Médecine, Nice, France, 2‐4 September, 2021, French Physiological Society, Sep 2021, Nice, France. pp.9-10, ⟨10.1111/apha.13745⟩
annee_publi: 2021
resume: * Introduction: Research about cerebellar functions has become a trendy field of study, especially regarding the cerebellum involvement in sensorimotor control. The heterogeneity of the findings encourages further investigations in cerebellar activation, hemisphere specificity, but also calls for new techniques to allow easier, cheaper routine assessments. In this study, we investigated hemispheric cerebellar activation during finger movements of the dominant and subdominant hand using functional near-infrared spectroscopy (fNIRS). * Methods: One healthy right-handed subject performed a finger-tapping task consisting of six repetitive blocks (task + rest), respectively, for the left and right hands. The task was repeated twice for each hand changing the activity periods: first, 10 seconds of tapping followed by 30 seconds of rest; then, 20 seconds of tapping followed by 30 seconds of rest. Cerebellar responses for each repetition were time-locked averaged. * Results: Similar haemodynamic responses were observed ipsilaterally and contralaterally for both tasks (10 vs 20 seconds activity). The dominant hemisphere (right-handed subject) proved to be involved even during subdominant hand movements. Higher synchronization of the right hemisphere for left-hand movement was observed and validated using frequency domain analysis. * Conclusion: fNIRS proved to be a good technique to capture cerebellar haemodynamics in a non-clinical setting. Furthermore, the observed asymmetries in cerebellar activation fully agree with similar fMRI studies that suggest the existence of different layers of controls from the cerebellum in the two hemispheres.
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titre: Exploring the Cerebellum with Functional Near-Infrared Imaging: A Preliminary Study
auteur: Giulia Rocco, Jerome Lebrun, Olivier Meste, Marie-Noële Magnié-Mauro
article: IEEE 18th International Symposium on Biomedical Imaging (ISBI 2021), IEEE, Apr 2021, Nice (virtuel), France. ⟨10.13140/RG.2.2.30022.14400⟩
annee_publi: 2021
resume: This study details the possibility to use functional Near-Infrared Spectroscopy (fNIRS) as a novel technique to unravel the cerebellar role in motor and cognitive processes. A simple motor task highlighted differences in the cerebellar hemodynamics between baseline and experimental session due to the subject's engagement.
typdoc: Communication dans un congrès
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titre: A new approach to detect N400 event-related potentials in giftedness children
auteur: Kawther Benharrath, Balkine Khaddoumi, Mounir Sayadi, Herve Rix, Olivier Meste, Jerome Lebrun, Sophie Guetat, Marie-Noële Magnié-Mauro
article: 2020 IEEE 4th International Conference on Advanced Systems and Emergent Technologies (IC_ASET), Dec 2020, Hammamet, Tunisia. pp.75-78, ⟨10.1109/IC_ASET49463.2020.9318262⟩
annee_publi: 2020
typdoc: Communication dans un congrès
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