Academic literature on the topic 'Synchronisation sensorielle'
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Dissertations / Theses on the topic "Synchronisation sensorielle":
Hoffmann, Charles. "Synchronisation des rythmes locomoteur et respiratoire : influence de stimulations sensorielles et intérêt pour la performance." Thesis, Montpellier 1, 2014. http://www.theses.fr/2014MON14003/document.
The natural synchronization between locomotor and respiratory systems raises many questions regarding its functional utility for the organism, as well as constraints that may modulate its appearance. Currently, contradictions remain in answers provided to these issues, especially because of the multiple methods used to study this phenomenon. The theory of coupled oscillators, and more specifically the sine circle map model, allows to accurately assess the coupling between locomotor and respiratory systems. This work aims at strengthening the validity of the use of this model for the study of locomotor-respiratory coupling (LRC), examining the relationship between LRC and sport performance, as well as identifying the constraints influencing the coupling between both systems. In pedalling or running tasks, participants were instructed or not to synchronize their locomotion or their breathing with an auditory rhythm which tempo matched their preferred frequencies (locomotor or respiratory). Our results show the effectiveness of auditory rhythm to induce stabilization of LRC, regardless of the instructions given to participants and the system paced. These results reflect a bidirectionality in the coupling between the locomotor and respiratory systems. Furthermore, we show a strong correlation between the increase in stability between the two systems and the gain in oxygen consumption (i.e., decrease). Therefore, the stability of LRC is an important factor to consider for sport performance. We also report a destabilization of LRC when one of the two systems is far off its preferred frequency. This result suggests that individuals spontaneously adopt an optimum synchronization between the two systems. Thus, it seems important to use a customized suitable stimulation that could be able to adapt its tempo to changes in locomotor or respiratory frequencies imposed by the constraints of the task. Overall, our results provide a better understanding of the evolution of LRC when confronted to constraints (e.g., locomotor or respiratory frequencies, auditory rhythm, exercise modality) and highlight the positive impact of its stability on sport performance. We also report the effectiveness of a visual stimulation to learn how to better manage energy resources during effort. Thus, this work opens perspectives on the use of auditory or visual stimuli, simple (e.g., metronome) or complex (e.g., music, avatar), for training and performance enhancement
Ko, Yi-Chun. "Espace sensible : expérience inter-sensorielle et corporelle, à partir des dispositifs musicaux interactifs." Thesis, Paris 8, 2015. http://www.theses.fr/2015PA080129.
This research was inspired by the enactive approach elaborated by F.-J Varelawhen he developed the embodied cognition theory; a living organism has to be involved physically and perceptually in a dynamic process with its surrounding environment so that a cognitive property can be embodied. To develop musical possibilities to motivate the listeners to appropriate their real life experiences, we are proposing the term "sensitive space" to articulate two practices of inter-sensory and physical experience : gameplay of musical listening and somatic exercise. This inter-sensory experience consists of the sensory interaction between exteroception and proprioception. We also focus on two specific aspects of this physical experience: the physical body and the virtual body - the body schema and the body image. The inharmonious relation of these two aspects will lead to a tension, sometimes to physical and psychic pain. To help the perceiving subject to become aware of this conflict, various somatic techniques are developed. We emit the hypothesis that the use of interactive musical devices can contribute to the exploration of the sensitive space, and thus bring a beneficial impact in somatic learning and rehabilitation. Several ways of demonstrating are: 1) the construction and tests of listening gameplay protocols, 2) the public exhibition of interactive multimedia devices 3) the case study on children affected by autism. We use different techniques to set up interactive musical devices: collective improvisation, spontaneous synchronization of the posture or the physical movement, kinesthetic empathy, etc. Finally, we highlight the beneficial aspects of introducing the interactive musical devices within the framework of healthcare. With these experimental results, we can then assert that the exploration of musical listening can have a beneficial impact in the context of somatic learning, on the condition that the listening is an act and lived musically
Ko, Yi-Chun. "Espace sensible : expérience inter-sensorielle et corporelle, à partir des dispositifs musicaux interactifs." Electronic Thesis or Diss., Paris 8, 2015. http://www.theses.fr/2015PA080129.
This research was inspired by the enactive approach elaborated by F.-J Varelawhen he developed the embodied cognition theory; a living organism has to be involved physically and perceptually in a dynamic process with its surrounding environment so that a cognitive property can be embodied. To develop musical possibilities to motivate the listeners to appropriate their real life experiences, we are proposing the term "sensitive space" to articulate two practices of inter-sensory and physical experience : gameplay of musical listening and somatic exercise. This inter-sensory experience consists of the sensory interaction between exteroception and proprioception. We also focus on two specific aspects of this physical experience: the physical body and the virtual body - the body schema and the body image. The inharmonious relation of these two aspects will lead to a tension, sometimes to physical and psychic pain. To help the perceiving subject to become aware of this conflict, various somatic techniques are developed. We emit the hypothesis that the use of interactive musical devices can contribute to the exploration of the sensitive space, and thus bring a beneficial impact in somatic learning and rehabilitation. Several ways of demonstrating are: 1) the construction and tests of listening gameplay protocols, 2) the public exhibition of interactive multimedia devices 3) the case study on children affected by autism. We use different techniques to set up interactive musical devices: collective improvisation, spontaneous synchronization of the posture or the physical movement, kinesthetic empathy, etc. Finally, we highlight the beneficial aspects of introducing the interactive musical devices within the framework of healthcare. With these experimental results, we can then assert that the exploration of musical listening can have a beneficial impact in the context of somatic learning, on the condition that the listening is an act and lived musically
Brahimaj, Detjon. "Integrating haptic feedback in smart devices : multimodal interfaces and design guidelines." Electronic Thesis or Diss., Université de Lille (2022-....), 2024. http://www.theses.fr/2024ULILN002.
The growing interest in integrating haptic feedback into commercial products is a direct result of advancements in haptic technology. Notably, the proliferation of smartphones and tablets has led to the integration of haptic modalities for various interfaces.While extensive research has explored the integration of sensory modalities (visual, auditory, tactile) in passive touch, there is a relative dearth of knowledge regarding bimodality or multimodality in the context of active touch. Emerging technologies, like surface haptics, offer opportunities to investigate various aspects related to sensory integration.This work provides valuable guidelines for developers, drawing from experimental studies in the realm of active touch. Our initial investigation focuses on the temporal relationship between audio and tactile feedback, revealing a critical 200 ms threshold during sliding interactions on a haptic surface. Moreover, we identify an acceptable audio-tactile delay of 109 ms for click gestures with virtual buttons, emphasizing the need to prohibit or minimize haptic delay to less than 40 ms. A comparative study involving sighted and blind individuals unveils a crucial aspect of inclusion: adhering to synchronization boundaries of the sighted population, relative to virtual buttons, allows for the inclusive design of interfaces accommodating both populations.Additionally, we explore the impact of factors such as stereoscopy and surface deformation on the perception of texture roughness, demonstrating that their presence can alter the perceived roughness of smooth textures by over 20%.Furthermore, our research explores the potential of using vibration headphones for object localization, revealing a sensitivity of 7° for the haptic modality, 8° for auditory feedback, and 6° for audio-tactile. This highlights not only the viability of haptic feedback in virtual reality for object localization but also the improvement achieved by reinforcing the sensory experience with audio-tactile stimuli
Drolet, Frédéric. "Cohérence et synchronisation dans un environnement virtuel multi-sensoriel réparti." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25659/25659.pdf.
David, François. "Rôle des synapses dendrodendritiques entre cellules mitrales et cellules granulaires dans la dynamique fonctionnelle du bulbe olfactif : une approche modélisatrice." Lyon 2, 2007. http://theses.univ-lyon2.fr/documents/lyon2/2007/david_f.
Mammalian olfactory bulb (OB) activity displays electrophysiological activity in different frequency bands: θ (2-10Hz), β (15-30Hz) and γ (30-90Hz). The resultant stereotypical temporal activities remain to be understood in terms of biophysical dynamics and functionality. We here studied the functional role of dendrodendritic synapses between mitral cells (MC), the output neurons of the OB and granule cells (GC), a type of local interneurons, in these oscillatory regimes. To this end, the computational modeling approaches were employed. We first show that shunting inhibition on the MC lateral dendrite is able to influence the timing of MC discharge. This process could regulate synchrony among MCs, considered an important property of information transmission to OB downstream structures. Second, in a network of MCs and GCs, we showed that synaptic interactions and sensory stimulation can influence oscillatory dynamics. In the case of strong network connectivity, the MCs could robustly synchronize in a β frequency range. Third, using experimental data from anesthetized rat, we showed that during γ local field potential oscillation, the phase of MC spikes could lock with the oscillation leading to some stabilized phases and firing rates. The underlying mechanism, based on weak γ-oscillatory synaptic input and MC intrinsic properties could lead to a self-synchronization process in the bulb and explain the emergence of γ bursts during olfactory stimulation. Dynamical and behavioral correlates of γ and β oscillations suggest they could be associated with perception and segmentation of odors, the two major functions of the olfactory system
Nemri, Abdellatif. "Codage de l’information visuelle par la plasticité et la synchronisation des réponses neuronales dans le cortex visuel primaire du chat." Thèse, 2010. http://hdl.handle.net/1866/4756.
Sensory systems encode information about our environment into electrical impulses that propagate in networks of neurons. Understanding the neural code – the principles by which information is represented in neuronal activity – is one of the most fundamental issues in neuroscience. This thesis investigates in a series of 3 studies (S) two coding mechanisms, synchrony and adaptation, in neurons of the cat primary visual cortex (V1). In V1, neurons display selectivity for image features such as contour orientation, motion direction and velocity. Each neuron has at least one combination of features that elicits its maximum firing rate. Visual information is thus distributed among numerous neurons within and across cortical columns, modules and areas. Synchronized electrical activity between cells was proposed as a potential mechanism underlying the binding of related features to form coherent perception. However, the precise nature of the relations between image features that may elicit neuronal synchrony remains unclear (S1). In another coding strategy, sensory neurons display transient changes of their response properties following prolonged exposure to an appropriate stimulus (adaptation). In adult cat V1, orientation-selective neurons shift their preferred orientation after being exposed to a non-preferred orientation. How the adaptive behavior of a neuron is related to that of its neighbors remains unclear (S2). Finally, we investigated the relationship between synchrony and orientation tuning in neuron pairs, especially how synchrony is modulated during adaptation-induced plasticity (S3). Main results — (S1) We show that two stimuli in either convergent or divergent motion elicit significantly more synchrony in V1 neuron pairs than two stimuli with the same motion direction. Synchronization seems to encode the relation of cocircularity, of which convergent (centripetal) and divergent (centrifugal) motion are two special instances, and could thus play a role in contour integration. Our results suggest that V1 neuron pairs transmit specific information on distinct image configurations through stimulus-dependent synchrony of their action potentials. (S2) We show that after being adapted to a non-preferred orientation, cells shift their preferred orientation in the same direction as their neighbors in most cases (75%). Several response properties of V1 neurons depend on their location within the cortical orientation map. The differences we found between cell clusters that shift in the same direction and cell clusters with both attractive and repulsive shifts suggest a different cortical location, iso-orientation domains for the former and pinwheel centers for the latter. (S3) We found that after adaptation, neuron pairs that share closer tuning properties display a significant increase of synchronization. Recovery from adaptation is accompanied by a return to the initial synchrony level. Synchrony therefore seems to reflect the similarity in neurons’ response properties, and varies accordingly when these properties change. Conclusions — This thesis further advances our understanding of how visual neurons adapt to a changing environment, especially regarding cortical network dynamics. We also propose novel data about the potential role of synchrony. Especially, synchrony appears capable of binding various features, whether similar or dissimilar, suggesting superimposed neural assemblies.
"Cohérence et synchronisation dans un environnement virtuel multi-sensoriel réparti." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25659/25659.pdf.
Books on the topic "Synchronisation sensorielle":
Pendoué, Materne. Synchronisation des 05 Calendriers : 8960 Corps Libres Dans le Cosmos - 6060 Intensités des Phénomènes Paranormaux -11 Organes Vitaux - 06 Organes Sensoriels - Chiffre de la Bête: 686 - 05 Autels. Independently Published, 2020.