Academic literature on the topic 'Traitement sensoriel tactile'
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Journal articles on the topic "Traitement sensoriel tactile":
Dumont, V., A. L. Marais, M. Anquetil, A. S. Trentesaux, and N. Roche-Labarbe. "Étude électroencéphalographique des capacités de régulation du traitement sensoriel dans la modalité tactile chez le nouveau-né prématuré : un marqueur néonatal pertinent du risque neurodéveloppemental ?" Perfectionnement en Pédiatrie 7, no. 2 (June 2024): 144. http://dx.doi.org/10.1016/j.perped.2024.04.031.
Gindrat, Anne-Dominique, Magali Chytiris, Myriam Balerna, Eric M. Rouiller, and Arko Ghosh. "L’utilisation desmartphonesfaçonne le traitement cortical de l’information sensorielle tactile provenant de l’extrémité des doigts." médecine/sciences 31, no. 4 (April 2015): 363–66. http://dx.doi.org/10.1051/medsci/20153104006.
Dissertations / Theses on the topic "Traitement sensoriel tactile":
Anquetil, Marie. "Marqueurs de développement de l'attention exécutive chez l'enfant d'âge préscolaire." Electronic Thesis or Diss., Normandie, 2023. http://www.theses.fr/2023NORMC034.
Executive attention develops rapidly during the preschool period, during which the first signs of atypical developmental trajectories can appear. Executive attention disorders, along with sensory atypicalities, particularly tactile, are frequently reported in neurodevelopmental disorders. The aim of this doctoral work was to explore the connections between executive attention and tactile sensory processing in preschool-aged children. In a first study, we identified a relationship between the tactile sensory processing score, measured by the Dunn Sensory Profile questionnaire, and the BRIEF-P overall executive composite score. To further investigate this connection at the neural level within our study population, we adapted a computerized executive attention task called the Preschool-ANT, which is compatible with EEG measurements. In a second study, we utilized this new tool to assess the links between executive attention and tactile sensory processing in EEG. We designed a vibrotactile oddball-omission paradigm to measure sensory prediction and its associated mechanism, repetition suppression. We found links between tactile repetition suppression and conflict responses in the Preschool-ANT in the fronto-central region. Furthermore, tactile repetition suppression in the somatosensory region is correlated with inhibition and planning in everyday life situations (BRIEF-P). Lastly, the detection of deviant tactile stimuli showed links both with the difference in late positive neural responses in the Preschool-ANT and emotional control in daily life situations (BRIEF-P). This doctoral work emphasizes the importance of studying the quality of tactile sensory processing from a very young age to understand the emergence of atypical developmental trajectories. It offers new perspectives for designing new assessment tools and promoting early interventions targeting sensory disorders to simultaneously reduce their impact and prevent attentional disorders
Dutu, Liviu-Cristian. "Analyse de signaux vibrotactiles et modèles flous de la perception : application aux interfaces tactiles pour l'automobile et l'aéronautique." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAA002/document.
In the field of automotive and aeronautical industries, human interaction with touch interfaces can be improved by using vibratory feedback or haptic effects, directly delivered to the user finger upon screen interaction. This new approach, which pro-actively stimulates the tactile sense, provides a safer and reliable way to interact with touch interfaces. Moreover, complex vibrational patterns can be designed in order to offer unique tactile sensations and thus increase user’s quality of experience. In this context, our first contribution focuses on a time-frequency analysis of vibrational patterns using the continuous wavelet transform of the signal delivered by the interface, in order to extract its most salient features, chosen based on a psychophysical study of the tactile sense, and which account for human perception. Using these features, our second contribution is a psychophysical model of vibrotactile perception developed using fuzzy logic and an original rule-base extraction method extending the classical Wang-Mendel approach. This model predicts the perceived comfort induced by a vibratory pattern according to its psychophysical properties, and shows good performances. The knowledge retrieved allowed the detection of several behavioral paradigms of vibrotactile perception, such as the effect of energy and texture. Our third contribution is the development of an ergonomic model of vibrotactile perception based on the evaluations of an automobile expert. Thanks to its good performances, the model was successfully adapted to the aeronautics area.The results of this thesis provide assistance to equipment suppliers by simplifying the conception of haptic effects intended to improve human interaction with touch interfaces
Corbo, Julien. "Des illusions tactiles à l’intégration spatiotemporelle dans le cortex somesthésique primaire : influence de la temporalité des stimuli cutanés sur leur représentation corticale." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0505.
Several tactile spatiotemporal illusions suggest that the timing of successive cutaneous stimulations modify the perception of their spatial location. If they are close enough in time and space, shorter inter-stimuli time intervals (ISI) lead to shorted perceived distances. To the extreme of this time-space relation, when the stimuli are simultaneous, subjects report the merged perception of a unique and centered point of stimulation. Therefore, the tactile perceptual system seems to use the time separating two stimuli to compute their spatial distance. To understand the implementation of this perceptual rule, one can investigate the neural representation of the stimuli that elicit the illusory percept, looking for spatial distortions and their underlying mechanisms. Studies based on the measure of the hemodynamic responses have shown such distortions of the somatotopic representations in the primary somatosensory cortex, for simultaneous and delayed stimulations. In order to enhance our understanding of the elementary phenomenon that underpins those spatial modifications of the sensory inputs, we investigated the cortical representation of pairs of simultaneous and delayed cutaneous stimuli in the S1 of anesthetized rats. Using electrophysiological recordings and extrinsic optical imaging, we revealed the cortical merging of inputs from simultaneous digits stimulation. When the stimuli were delayed, we observed ISI-dependent modulations of the responses to the second stimulus. This spatiotemporal integration, that didn’t seem to contribute directly to a distance contraction effect, could however favor the mislocalization observed in illusory perception
Azhikkattuparambil, Bhaskaran Arjun. "Cellular and circuit mechanisms of neocortical dysfunction in Fragile X Syndrome." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0244/document.
This study explores the evoked responses, intrinsic and spontaneous activity of two different neuronal populations in the hind paw region of the primary somatosensory cortex (S1) of mice. Initially, we explored information processing in these neurons under normal physiological conditions, and subsequently in a mouse model of Fragile X Syndrome (FXS). FXS is the most common form of inherited mental retardation syndrome and a frequent cause of autism spectrum disorders (ASD). FXS is a single gene (Fmr1) disorder, which can be reliably modeled by a mutant mouse model, the Fmr1 knockout (Fmr1-/y) mouse. Hyperexcitability of neocortical networks and hypersensibility to sensory stimuli are prominent features of FXS and ASD. We previously established a strong causal link between a channelopathy, hyperexcitability of neurons in the primary sensory region of the neocortex and sensory hypersensitivity in this mouse model. In the current study, we extended these findings, by conducting a detailed exploration of the processing of tactile sensory information (evoked by hind paw stimulation) in the neocortex of these mice.Most of our knowledge regarding information processing in S1 comes from studies of the whisker-related barrel cortex (which processes tactile-related sensory information derived from the whiskers), yet the processing of sensory inputs from the hind-paws is poorly understood. Using in vivo whole-cell patch-clamp recordings, we classified the cells into suprathreshold responders (the cells which responded to the hind-paw stimulations with an action potential), subthreshold responders (the cells responded without eliciting an action potential) and non-responder cells (neurons which did not show any response). We then compared the evoked sub- and supra-threshold responses, intrinsic properties, and spontaneous activity of layer (L) 2/3 pyramidal neurons of the S1 hind-paw (S1-HP) region of anaesthetized wild type (WT) and Fmr1-/y mice. We identified spontaneous, intrinsic and evoked response alterations in Fmr1-/y mice. We probed possible mechanisms contributing to this sensory impairment in Fmr1-/y mice. Finally, we tested the possibility of correcting pathophysiological alterations in these neurons using specific pharmacological agents targeting the ion channel defects described previously by our team