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  • Neuroinformatics
  • Mémoires en Sciences de l'Information et de la Communication

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  • Authors: Val-Laillet, David; Gaultier, Audrey; Salaun, Marie-Christine; Malbert, Charles-Henri;

    Session : Cognition and BehaviorSession : Cognition and Behavior; The aim of our work was to describe the behavioral consequences of conditioned flavor aversion and preference in pigs, and to investigate the brain circuits involved in the representation of flavors with different hedonic values. The study was realized on eight 30-kg growing pigs and divided into three steps. 1) Animals were negatively conditioned (intraduodenal injection of LiCl) to a F- flavored meal and positively habituated (intraduodenal injection of NaCl) to a F+ flavored meal (F+ and F- being a thyme or cinnamon flavor), after which the behavioral reactions of the animals were recorded. 2) One and five weeks later, animals were subjected to three 30-min two-choice food tests to investigate their preferences between F+, F- and a novel flavor (O: orange). 3) Anaesthetized animals were subjected to three SPECT (Single Photon Emission Computed Tomography) brain imaging (Tc99m): control situation (no flavor), exposure to F+ and F- flavors. Statistical analysis was performed using SPM8 software and cerebral brain flow differences were determined using co-registered T1 MRI and histological atlases. 1) The negative reinforcement induced a physical malaise and visceral illness. After a positive reinforcement, animals displayed behavioral items related to playing or feeding motivation and appeasement (P < 0.05). 2) The F+ flavor was significantly preferred over the O and F- flavors, and the O flavor was significantly preferred over the F- flavor (P < 0.01 for all). 3) Compared to the control situation and contrary to F-, exposure to F+ specifically induced the activation of the dorsal anterior cingulate cortex, the dorsolateral prefrontal and orbitofrontal cortices, the putamen and thalamic reticularis nucleus (P < 0.001). When compared to F- and in addition to the aforementioned regions, F+ also specifically induced the activation of the caudate nucleus and hippocampus (P < 0.05). These neural circuits are involved in sensory associative processes, selective attention, learning and memory, positive emotions, reward and feeding motivation. This study reveals the unconscious cognitive dimension evoked by food flavors according to the individual experience, and highlights the importance of the sensory image of food on hedonism and anticipatory eating behavior.

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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Coëz, Arnaud; Loundon, Natalie; Rouillon, Isabelle; Parodi, Marine; +8 Authors

    International audience; Purpose: Deafness in infancy has longlasting consequences on brain organization. To achieve the best developmental outcomes in case of profound deafness, cochlear implantation (CI) needs to take place in a critical period during the first year of life, before the cross-modal reorganization of the brain due to auditory deprivation stabilises, preventing the typical development of the auditory cortices. Despite its importance for implantation outcomes, the nature of this critical period and the underlying neural reorganization have not been fully explored.Materials and methods: To fill this knowledge gap, we investigated the cortical responses of 12-month-old profoundly deaf infants and their age-matched controls to sounds produced by a human voice as compared to non-human sounds using functional near-infrared spectroscopy (fNIRS). The deaf infants were tested before undergoing CI surgery and wore hearing aids, allowing them to perceive low frequencies. Human voice stimuli have been shown to trigger brain responses early in development, possibly due to its evolutionary relevance for survival.Results: We found increased brain responses to the human voice in the deaf infants in the bilateral fronto-temporal areas, and their responses correlated with their residual hearing thresholds. These results suggest that even the limited sound stimulation that these deaf infants receive due to their residual hearing allowed the temporal cortices to develop sensitivity to the human voice prior to implantation. The hearing control group showed an inverted hemodynamic response to both voice and non-voice stimuli in the left parietal and right temporal areas, suggesting that by 12 months of age, they habituate rapidly to these very familiar stimuli. While both groups showed an inverted response to the non-voice stimuli, they differed in their responses to voice stimuli.Conclusions: We hypothesize that the responses found in deaf infants to human voice can be consider a good cochlear implant prognosis.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Archivio istituziona...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Hearing Balance and Communication
    Article . 2022 . Peer-reviewed
    Data sources: Sygma; Crossref
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Archivio istituziona...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Hearing Balance and Communication
      Article . 2022 . Peer-reviewed
      Data sources: Sygma; Crossref
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  • Authors: Butet, Simon; Lioi, Giulia; Fleury, Mathis; Bannier, Elise; +3 Authors

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Nemaire, Masimba; Asensio, Paul; Badier, Jean-Michel; Leblond, Juliette; +1 Authors

    Abstract In this work, we consider the inverse source recovery problem from sEEG, EEG and MEG point-wise data. We regard this as an inverse source recovery problem for L2 vector-fields normally oriented and supported on the grey/white matter interface, which together with the brain, skull and scalp form a non-homogeneous layered conductor. We assume that the quasistatic approximation of Maxwell’s equation holds for the electro-magnetic fields considered. The electric data is measured point-wise inside and outside the conductor while the magnetic data is measured only point-wise outside the conductor. These ill-posed problems are solved via Tikhonov regularization on triangulations of the interfaces and a piecewise linear model for the current on the triangles. Both in the continuous and discrete formulation the electric potential is expressed as a linear combination of double layer potentials while the magnetic flux density in the continuous case is a vector-surface integral whose discrete formulation features single layer potentials. A main feature of our approach is that these contributions can be computed exactly. Due to the consideration of the regularity conditions of the electric potential in the inverse source recovery problem, the Cauchy transmission problem for the electric potential is inadvertently solved as well. In the problem, we propagate only the electric potential while the normal derivatives at the interfaces of discontinuity of the electric conductivities are computed directly from the resulting solution. This reduces the computational complexity of the problem. There is a direct connection between the magnetic flux density and the electrical potential in conductors such as the one we explore, hence a coupling of the sEEG, EEG and MEG data for solving the respective inverse source recovery problems simultaneously is direct. We treat these problems in a unified approach that uses only single and/or double layer potentials. We provide numerical examples using realistic meshes of the head with synthetic data.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Journal of Physics :...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Journal of Physics : Conference Series
    Article . 2021 . Peer-reviewed
    License: CC BY
    Data sources: Crossref
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Journal of Physics :...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      Journal of Physics : Conference Series
      Article . 2021 . Peer-reviewed
      License: CC BY
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  • Authors: Moriceau, Aurélie;

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  • Authors: Chouk, Héla; Amorim, Michel-Ange, M.-A.;

    ISBN : 978-2-9532965-0-1; La littérature psychophysique sur la reconnaissance d'objets tridimensionnels complexes (de type arrangement de cubes), a montré qu'afin d'indiquer si deux objets présentés simultanément ou successivement sous des orientations différentes sont identiques ou non, l'observateur engageait un processus de rotation mentale de l'objet test afin de l'aligner à l'objet de référence. D'autre part, l'identification des postures humaines présentées sous différentes orientations active des structures cérébrales impliquées dans la perception sociale et semble être médiée par une connaissance implicite des contraintes biomécaniques du corps humain. De plus, notre connaissance du corps facilite sa rotation mentale autant que sa reconnaissance. Le thème général de notre étude est la compréhension du rôle fonctionnel (et des mécanismes cérébraux) du point de vue pour la reconnaissance des objets 3D et la spécificité du corps humain en tant qu'objet. A ce jour, aucune étude en imagerie cérébrale n'avait comparé la reconnaissance des postures humaines à celle de configurations spatiales équivalentes de cubes ou d'objets plus familiers (une lampe de bureau). Notre expérimentation met en évidence au moyen de la MEG l'organisation spatio-temporelle des activités corticales dans une tâche de reconnaissance visuelle impliquant l'anticipation des conséquences visuelles d'un changement de point de vue.

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  • Authors: Fuchs, Susanne; Loevenbruck, Hélène; Pape, Daniel; Perrier, Pascal;

    International audience; What happens in the brain whe humans are producing speech or when they are listening to it? This is the main focus of the book, which includes a collection of 13 articles, written by researchers at some of the foremost European laboratories in the field of linguistics, phonetics, psychology, cognitive sciences, and neurosciences. The articles review progress achieved over the last twenty years in these areas, and present recent experimental results adressing issues of pre-lexical and semantic processing, brain activity in the perception of voicing, pitch, prosody, and pointing. A large part of the book deals with brain activation in speech and language pathologies: language-related aspects in epilepsy, Parkinson's disease, dyslexia and stuttering. Other contributions discuss speech acquisition modelling, syllabification and lexical access, and the specificity of speech in relation to other biological motor tasks.

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  • Authors: Lbath, Hanâ; Petersen, Alexander; Achard, Sophie;

    International audience; Resting-state functional Magnetic Resonance Imaging (fMRI) is widely used to infer brain functional connectivity networks. Such networks correlate neural signals to connect brain regions, which consist in groups of dependent voxels. Previous work has focused on aggregating variables within predefined regions. However, it can be shown the presence of within-region correlations has noticeable impacts on inter-regional correlation detection, and thus edge identification. To alleviate them, we propose to leverage the large-scale correlation screening literature, and derive simple and practical characterizations of the mean number of correlation discoveries that flexibly incorporate intra-regional dependence structures. This novel approach for handling arbitrary intra-regional correlation is shown to improve false positive and true positive rates. A connectivity network inference framework is then presented. First, inter-regional correlation distributions are estimated. Then, correlation thresholds are constructed for each edge, with false discovery control that can be tailored to one's application. Finally, the proposed framework is implemented on a real-world dataset.

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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Mathis Fleury; Patrícia Figueiredo; Athanasios Vourvopoulos; Anatole Lécuyer;

    Abstract Electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) are two commonly used non-invasive techniques for measuring brain activity in neuroscience and brain–computer interfaces (BCI). Objective. In this review, we focus on the use of EEG and fMRI in neurofeedback (NF) and discuss the challenges of combining the two modalities to improve understanding of brain activity and achieve more effective clinical outcomes. Advanced technologies have been developed to simultaneously record EEG and fMRI signals to provide a better understanding of the relationship between the two modalities. However, the complexity of brain processes and the heterogeneous nature of EEG and fMRI present challenges in extracting useful information from the combined data. Approach. We will survey existing EEG–fMRI combinations and recent studies that exploit EEG–fMRI in NF, highlighting the experimental and technical challenges. Main results. We made a classification of the different combination of EEG-fMRI for NF, we provide a review of multimodal analysis methods for EEG–fMRI features. We also survey the current state of research on EEG-fMRI in the different existing NF paradigms. Finally, we also identify some of the remaining challenges in this field. Significance. By exploring EEG-fMRI combinations in NF, we are advancing our knowledge of brain function and its applications in clinical settings. As such, this review serves as a valuable resource for researchers, clinicians, and engineers working in the field of neural engineering and rehabilitation, highlighting the promising future of EEG-fMRI-based NF.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Journal of Neural En...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Journal of Neural Engineering
    Article . 2023 . Peer-reviewed
    License: IOP Copyright Policies
    Data sources: Crossref
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    Preprint . 2023
    Data sources: HAL-Rennes 1
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Journal of Neural En...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Journal of Neural Engineering
      Article . 2023 . Peer-reviewed
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      HAL-Rennes 1
      Preprint . 2023
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  • Authors: Roullet, Bernard; Droulers, Olivier;

    The evolution of marketing concepts under the influence of the psychologicalthought is a constant in the discipline history. The development of cognitive science, andmore specifically of the neurosciences, allow us today to advocate a consumer neuroscience.The author presents here the expected developments of the discipline and its contiguousethical reflections. l'évolution des concepts marketing sous l'influence de la pensée psychologique estune constante dans l'histoire de la discipline. Le développement des sciences cognitives etplus spécifiquement des neurosciences permet aujourd'hui de proposer une neuroscience duconsommateur. L'auteur expose ici les développements attendus et les réflexions éthiquesattenantes.

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173 Research products (1 rule applied)
  • Authors: Val-Laillet, David; Gaultier, Audrey; Salaun, Marie-Christine; Malbert, Charles-Henri;

    Session : Cognition and BehaviorSession : Cognition and Behavior; The aim of our work was to describe the behavioral consequences of conditioned flavor aversion and preference in pigs, and to investigate the brain circuits involved in the representation of flavors with different hedonic values. The study was realized on eight 30-kg growing pigs and divided into three steps. 1) Animals were negatively conditioned (intraduodenal injection of LiCl) to a F- flavored meal and positively habituated (intraduodenal injection of NaCl) to a F+ flavored meal (F+ and F- being a thyme or cinnamon flavor), after which the behavioral reactions of the animals were recorded. 2) One and five weeks later, animals were subjected to three 30-min two-choice food tests to investigate their preferences between F+, F- and a novel flavor (O: orange). 3) Anaesthetized animals were subjected to three SPECT (Single Photon Emission Computed Tomography) brain imaging (Tc99m): control situation (no flavor), exposure to F+ and F- flavors. Statistical analysis was performed using SPM8 software and cerebral brain flow differences were determined using co-registered T1 MRI and histological atlases. 1) The negative reinforcement induced a physical malaise and visceral illness. After a positive reinforcement, animals displayed behavioral items related to playing or feeding motivation and appeasement (P < 0.05). 2) The F+ flavor was significantly preferred over the O and F- flavors, and the O flavor was significantly preferred over the F- flavor (P < 0.01 for all). 3) Compared to the control situation and contrary to F-, exposure to F+ specifically induced the activation of the dorsal anterior cingulate cortex, the dorsolateral prefrontal and orbitofrontal cortices, the putamen and thalamic reticularis nucleus (P < 0.001). When compared to F- and in addition to the aforementioned regions, F+ also specifically induced the activation of the caudate nucleus and hippocampus (P < 0.05). These neural circuits are involved in sensory associative processes, selective attention, learning and memory, positive emotions, reward and feeding motivation. This study reveals the unconscious cognitive dimension evoked by food flavors according to the individual experience, and highlights the importance of the sensory image of food on hedonism and anticipatory eating behavior.

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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Coëz, Arnaud; Loundon, Natalie; Rouillon, Isabelle; Parodi, Marine; +8 Authors

    International audience; Purpose: Deafness in infancy has longlasting consequences on brain organization. To achieve the best developmental outcomes in case of profound deafness, cochlear implantation (CI) needs to take place in a critical period during the first year of life, before the cross-modal reorganization of the brain due to auditory deprivation stabilises, preventing the typical development of the auditory cortices. Despite its importance for implantation outcomes, the nature of this critical period and the underlying neural reorganization have not been fully explored.Materials and methods: To fill this knowledge gap, we investigated the cortical responses of 12-month-old profoundly deaf infants and their age-matched controls to sounds produced by a human voice as compared to non-human sounds using functional near-infrared spectroscopy (fNIRS). The deaf infants were tested before undergoing CI surgery and wore hearing aids, allowing them to perceive low frequencies. Human voice stimuli have been shown to trigger brain responses early in development, possibly due to its evolutionary relevance for survival.Results: We found increased brain responses to the human voice in the deaf infants in the bilateral fronto-temporal areas, and their responses correlated with their residual hearing thresholds. These results suggest that even the limited sound stimulation that these deaf infants receive due to their residual hearing allowed the temporal cortices to develop sensitivity to the human voice prior to implantation. The hearing control group showed an inverted hemodynamic response to both voice and non-voice stimuli in the left parietal and right temporal areas, suggesting that by 12 months of age, they habituate rapidly to these very familiar stimuli. While both groups showed an inverted response to the non-voice stimuli, they differed in their responses to voice stimuli.Conclusions: We hypothesize that the responses found in deaf infants to human voice can be consider a good cochlear implant prognosis.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Archivio istituziona...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Hearing Balance and Communication
    Article . 2022 . Peer-reviewed
    Data sources: Sygma; Crossref
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Archivio istituziona...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Hearing Balance and Communication
      Article . 2022 . Peer-reviewed
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  • Authors: Butet, Simon; Lioi, Giulia; Fleury, Mathis; Bannier, Elise; +3 Authors

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Nemaire, Masimba; Asensio, Paul; Badier, Jean-Michel; Leblond, Juliette; +1 Authors

    Abstract In this work, we consider the inverse source recovery problem from sEEG, EEG and MEG point-wise data. We regard this as an inverse source recovery problem for L2 vector-fields normally oriented and supported on the grey/white matter interface, which together with the brain, skull and scalp form a non-homogeneous layered conductor. We assume that the quasistatic approximation of Maxwell’s equation holds for the electro-magnetic fields considered. The electric data is measured point-wise inside and outside the conductor while the magnetic data is measured only point-wise outside the conductor. These ill-posed problems are solved via Tikhonov regularization on triangulations of the interfaces and a piecewise linear model for the current on the triangles. Both in the continuous and discrete formulation the electric potential is expressed as a linear combination of double layer potentials while the magnetic flux density in the continuous case is a vector-surface integral whose discrete formulation features single layer potentials. A main feature of our approach is that these contributions can be computed exactly. Due to the consideration of the regularity conditions of the electric potential in the inverse source recovery problem, the Cauchy transmission problem for the electric potential is inadvertently solved as well. In the problem, we propagate only the electric potential while the normal derivatives at the interfaces of discontinuity of the electric conductivities are computed directly from the resulting solution. This reduces the computational complexity of the problem. There is a direct connection between the magnetic flux density and the electrical potential in conductors such as the one we explore, hence a coupling of the sEEG, EEG and MEG data for solving the respective inverse source recovery problems simultaneously is direct. We treat these problems in a unified approach that uses only single and/or double layer potentials. We provide numerical examples using realistic meshes of the head with synthetic data.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Journal of Physics :...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Journal of Physics : Conference Series
    Article . 2021 . Peer-reviewed
    License: CC BY
    Data sources: Crossref
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      Journal of Physics : Conference Series
      Article . 2021 . Peer-reviewed
      License: CC BY
      Data sources: Crossref
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  • Authors: Moriceau, Aurélie;

    International audience

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  • Authors: Chouk, Héla; Amorim, Michel-Ange, M.-A.;

    ISBN : 978-2-9532965-0-1; La littérature psychophysique sur la reconnaissance d'objets tridimensionnels complexes (de type arrangement de cubes), a montré qu'afin d'indiquer si deux objets présentés simultanément ou successivement sous des orientations différentes sont identiques ou non, l'observateur engageait un processus de rotation mentale de l'objet test afin de l'aligner à l'objet de référence. D'autre part, l'identification des postures humaines présentées sous différentes orientations active des structures cérébrales impliquées dans la perception sociale et semble être médiée par une connaissance implicite des contraintes biomécaniques du corps humain. De plus, notre connaissance du corps facilite sa rotation mentale autant que sa reconnaissance. Le thème général de notre étude est la compréhension du rôle fonctionnel (et des mécanismes cérébraux) du point de vue pour la reconnaissance des objets 3D et la spécificité du corps humain en tant qu'objet. A ce jour, aucune étude en imagerie cérébrale n'avait comparé la reconnaissance des postures humaines à celle de configurations spatiales équivalentes de cubes ou d'objets plus familiers (une lampe de bureau). Notre expérimentation met en évidence au moyen de la MEG l'organisation spatio-temporelle des activités corticales dans une tâche de reconnaissance visuelle impliquant l'anticipation des conséquences visuelles d'un changement de point de vue.

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  • Authors: Fuchs, Susanne; Loevenbruck, Hélène; Pape, Daniel; Perrier, Pascal;

    International audience; What happens in the brain whe humans are producing speech or when they are listening to it? This is the main focus of the book, which includes a collection of 13 articles, written by researchers at some of the foremost European laboratories in the field of linguistics, phonetics, psychology, cognitive sciences, and neurosciences. The articles review progress achieved over the last twenty years in these areas, and present recent experimental results adressing issues of pre-lexical and semantic processing, brain activity in the perception of voicing, pitch, prosody, and pointing. A large part of the book deals with brain activation in speech and language pathologies: language-related aspects in epilepsy, Parkinson's disease, dyslexia and stuttering. Other contributions discuss speech acquisition modelling, syllabification and lexical access, and the specificity of speech in relation to other biological motor tasks.

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