Literatura académica sobre el tema "Enregistrements intracérébraux"
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Artículos de revistas sobre el tema "Enregistrements intracérébraux"
Eusebio, Alexandre. "Que nous ont appris les enregistrements intracérébraux ?" Revue Neurologique 171 (abril de 2015): A243. http://dx.doi.org/10.1016/j.neurol.2015.01.554.
Texto completoSzurhaj, William, Samuel Boudet, Renaud Lopes, Jean-Pierre Vignal, Christelle Charley-Monaca, Nicolas Reyns, Philippe Derambure, Laure Peter-Derex y Mathilde Flamand. "Parasomnies : que nous apprennent les enregistrements intracérébraux ?" Neurophysiologie Clinique/Clinical Neurophysiology 47, n.º 3 (junio de 2017): 217–18. http://dx.doi.org/10.1016/j.neucli.2017.05.083.
Texto completoPeter-Derex, L., M. Magnin y H. Bastuji. "Dynamique spatiotemporelle des microéveils chez l’Homme : étude par enregistrements intracérébraux". Médecine du Sommeil 11, n.º 1 (enero de 2014): 10. http://dx.doi.org/10.1016/j.msom.2014.01.021.
Texto completoMak-Mccully, R., M. Rey, P. Chauvel, H. Bastuji y E. Halgren. "Organisation thalamo-corticale des K complexes : apport des enregistrements intracérébraux". Médecine du Sommeil 11, n.º 1 (enero de 2014): 10–11. http://dx.doi.org/10.1016/j.msom.2014.01.022.
Texto completoClaude, L., G. Prados, M. Castro, B. De Blay, C. Perchet, S. Mazza, L. Garcia-Larrea y H. Bastuji. "Les fuseaux de sommeil n’inhibent pas la réponse corticale à la douleur : étude par enregistrements intracérébraux et de scalp". Médecine du Sommeil 10, n.º 2 (abril de 2013): 48–49. http://dx.doi.org/10.1016/j.msom.2013.03.009.
Texto completoClaude, L., G. Prados, M. Castro, B. De Blay, C. Perchet, S. Mazza, L. Garcia-Larrea y H. Bastuji. "Les fuseaux de sommeil n’inhibent pas la réponse corticale à la douleur : étude par enregistrements intracérébraux et de scalp". Neurophysiologie Clinique/Clinical Neurophysiology 43, n.º 2 (abril de 2013): 111–12. http://dx.doi.org/10.1016/j.neucli.2013.01.086.
Texto completoLouvet, Élise, Francoise Bertran, Samuel Boudet, Philippe Derambure, Nicolas Reyns y William Szurhaj. "Enregistrement intracérébral des pointes épileptiques généralisées et leur impact sur l’hippocampe". Neurophysiologie Clinique/Clinical Neurophysiology 46, n.º 3 (junio de 2016): 231–32. http://dx.doi.org/10.1016/j.neucli.2016.06.037.
Texto completoTesis sobre el tema "Enregistrements intracérébraux"
Peter-Derex, Laure. "Les micro-éveils chez l'homme : étude par enregistrements intracérébraux". Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10314/document.
Texto completoWakefulness, non rapid eye movement (NREM) and rapid eye movement (REM) sleep are characterized by specific brain activities. However, recent experimental findings as well as various clinical conditions (parasomnia, sleep inertia) have revealed the presence of transitional states. Brief intrusions of wakefulness into sleep, namely arousals, appear as relevant phenomena to characterize how brain commutes from sleep to wakefulness. Using intra-cerebral recordings in 8 drug-resistant epileptic patients we analyzed electroencephalographic (EEG) activity during spontaneous or nociceptive-induced arousals in NREM and REM sleep. Wavelet spectral analyses were performed to compare EEG signals during arousals, sleep and wakefulness, simultaneously in the thalamus, and primary, associative or high order cortical areas. We observed that: 1) thalamic activity during arousals is stereotyped and its spectral composition corresponds to a state in-between wakefulness and sleep 2) patterns of cortical activity during arousals are heterogeneous, their manifold spectral composition being related to several factors such as sleep stages, cortical areas, arousal modality ("spontaneous" vs nociceptive-induced) and homeostasis; 3) spectral compositions of EEG signals during arousal and wakefulness differ from each other. Thus, stereotyped arousals at the thalamic level seem to be associated with different patterns of cortical arousals due to various regulation factors. These results suggest that human cortex does not shift from sleep to wake in an abrupt binary way. Arousals may be considered more as different states of the brain than as "short awakenings". This phenomenon may reflect the mechanisms involved in the compromise needed to be found between two main contradictory functional necessities, preserving the continuity of sleep and maintaining the possibility to react
Claude, Léa. "Fuseau de sommeil et traitement de l'information nociceptive : études par enregistrements électroencéphalographiques de surface et intracérébraux chez l'Homme". Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10159/document.
Texto completoSleep spindles are generated by thalamic reticular nuclei and transmitted into the thalamo-cortical network during nonREM sleep. They are commonly thought to have a sleep-protecting role by inhibiting sensory inputs. The aim of our work was to test their inhibitory effect on behavioural and evoked responses to nociceptive inputs in humans by conducing three electrophysiological experiments during a whole night of sleep. The first two experiments used thermo-nociceptive laser stimuli delivered during or apart from sleep spindles. Cerebral responses were obtained with surface recordings in healthy subjects, or intracerebral ones in epileptic patients. Results showed no significant difference in arousal reactions and cortical evoked responses to stimuli delivered during or apart from sleep spindles. This was the case on surface recordings as well as on intracerebral ones in which spindles were detected within the thalamus while responses were analysed in the insula, known to systematically respond to nociceptive stimuli. In the third experiment, in order to increase the rate of stimuli, electrical ones were used at nociceptive intensities. The relationship between spindle activity and sensory processing was then investigated with surface high-density recordings in healthy subjects. Evoked responses were present in any case, but of higher amplitude around the initiation of spindle activity. Thus, the spindles inhibitory effect of sensory processing does not seem to apply to nociceptive inputs and the modulation of cortical responses according to the timing of spindle might reflect the influence of the slow oscillation
Baratin, Clarissa. "Réseaux cognitifs sous-jacents à la prise de décision basée sur la valeur". Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALS006.
Texto completoHow do we decide between different options? This question, which has inspired generations of economists and psychologists, has now entered the realm of cognitive neuroscience, where it has evolved into: how does our brain implement a decision between different options? The underlying mechanisms have often been decomposed into several stages. First, a valuation stage would occur, where each option under consideration is assigned a subjective value. Then comes the comparison stage, where the subjective values of different options are compared, and finally the selection stage, where one of the options is chosen. The valuation stage is thought to recruit a fronto-striatal network, including the ventromedial prefrontal cortex (vmPFC), which encodes the values of pleasant stimuli on an abstract common scale. The encoding of unpleasant stimuli is comparatively less well understood, but might recruit the anterior insular cortex (aIns). Comparison and selection processes are thought to involve the neural representation of chosen and unchosen option values relative to each other. However, the dynamics of this encoding may depend on the goal of the task (e.g. “choosing the best options” vs “choosing the worst option”). Finally, decision-making processes may be influenced by pre-stimulus activity endogenous to the brain, leading to variability in the choices made. In this thesis, we investigate how these three different factors: valence, task goal, and endogenous activity, interact with the neural mechanisms underlying value-based decision-making. To do so, in a first study, intracranial EEG (iEEG) data was acquired from 30 epileptic patients while they evaluated pleasant and unpleasant stimuli, prior to making binary decisions, which were manipulated in terms of valence and goal. In a second study involving 10 epileptic patients, an iEEG brain-computer interface setup was used to assess the effect of pre-stimulus activity on multi-attribute choice behavior. Our findings shed light on the neural underpinnings of valuation and comparison processes, by showcasing an encoding of pleasant and unpleasant values in the vmPFC and aIns, describing how task goal modulates the representation of choice values in these regions, and demonstrating an effect of vmPFC/aIns pre-stimulus activity on choice behavior
Capítulos de libros sobre el tema "Enregistrements intracérébraux"
Péron, Julie, Andy Christen y Didier Grandjean. "Chapitre 3. Enregistrements électrophysiologiques intracérébraux". En Electrophysiologie de la cognition, 77. Dunod, 2013. http://dx.doi.org/10.3917/dunod.hot.2013.01.0077.
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