P. Ravassard

Publications13
h-index11
Citations854
Highly Influential Citations53
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Localization of the Brainstem GABAergic Neurons Controlling Paradoxical (REM) Sleep
Paradoxical sleep (PS) is a state characterized by cortical activation, rapid eye movements and muscle atonia. Fifty years after its discovery, the neuronal network responsible for the genesis of PS… Expand
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Multisensory Control of Hippocampal Spatiotemporal Selectivity
A Sense of Place Hippocampal place cells are believed to be mainly governed by visual and self-motion cues. However, the contribution of sensory cues such as smells, sounds, and textures, etc., is… Expand
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Paradoxical (REM) sleep deprivation causes a large and rapidly reversible decrease in long-term potentiation, synaptic transmission, glutamate receptor protein levels, and ERK/MAPK activation in the…
STUDY OBJECTIVES It has been shown that wake (W) and slow wave sleep (SWS) modulate synaptic transmission in neocortical projections. However the impact of paradoxical sleep (PS) quantities on… Expand
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REM Sleep-Dependent Bidirectional Regulation of Hippocampal-Based Emotional Memory and LTP.
Prolonged rapid-eye-movement (REM) sleep deprivation has long been used to study the role of REM sleep in learning and memory processes. However, this method potentially induces stress and fatigue… Expand
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The supramammillary nucleus and the claustrum activate the cortex during REM sleep
Plasticity and cortical activation during REM sleep is shown by a subset of cortical and hippocampal neurons. Evidence in humans suggests that limbic cortices are more active during rapid eye… Expand
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Dynamics of cortical dendritic membrane potential and spikes in freely behaving rats
Dendrites are more active than expected Dendrites occupy more than 90% of neuronal tissue. However, it has not been possible to measure distal dendritic membrane potential and spiking in vivo over a… Expand
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Major impairments of glutamatergic transmission and long-term synaptic plasticity in the hippocampus of mice lacking the melanin-concentrating hormone receptor-1.
The hypothalamic neuropeptide melanin-concentrating hormone (MCH) plays important roles in energy homeostasis, anxiety, and sleep regulation. Since the MCH receptor-1 (MCH-R1), the only functional… Expand
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Sleep dynamics: a self-organized critical system.
In psychiatric and neurological diseases, sleep is often perturbed. Moreover, recent works on humans and animals tend to show that sleep plays a strong role in memory processes. Reciprocally, sleep… Expand
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Multisensory Control of Multimodal Behavior: Do the Legs Know What the Tongue Is Doing?
Understanding of adaptive behavior requires the precisely controlled presentation of multisensory stimuli combined with simultaneous measurement of multiple behavioral modalities. Hence, we developed… Expand
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Paradoxical sleep: A vigilance state to gate long-term brain plasticity?
Memory consolidation is the process for long-term storage of information and protection against interferences. It has been proposed that long-term potentiation (LTP), the long-lasting enhancement of… Expand
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