Brain postnatal development is characterized by critical periods of experience-dependent remodeling. Termination of this period of intense plasticity is associated with settling of neuronal circuits, allowing for efficient information processing. Failure to end critical periods thus results in neurodevelopmental disorders.…  Continue reading →

The hippocampus is a limbic structure that plays a critical role in the formation, consolidation and recall of various forms of memory, including episodic and spatial memory. How do such complex cognitive functions emerge from the activity of hippocampal neurons…  Continue reading →

The cortex is modern invention of the mammalian brain and a major focus of modern neuroscience. Yet, its role in important functions such as sensory perception has been challenged by numerous cortical inactivation experiments resulting in a lack of effect…  Continue reading →

Tactile information is acquired and processed in the brain through concerted interactions between movement and sensation. We study neuronal processes responsible for the coding of sensorimotor information in the barrel cortex of rodents by using a comprehensive approach including electrophysiological,…  Continue reading →

There is no doubt that sleep is quite the opposite of wakefulness. Behaviorally, meaningful interactions with the environment are suppressed; neurobiologically, wake-promoting brain areas are silent. However, since decades we know that at least some wake-promoting areas continue to discharge action potentials…  Continue reading →

Spontaneous neuronal activity in sensory brain regions is spatiotemporally structured, suggesting that this ongoing activity may have a functional role. Nevertheless, the neuronal interactions underlying these spontaneous activity patterns, and their biological relevance, remain elusive. We addressed these questions using…  Continue reading →

Our main interest is how neural networks of the brain support its cognitive capacities. We are focusing on the procedural learning, i.e. the acquisition of skills through repeated performance and practice of a behavior in response to external cues. Cortex/thamus-basal…  Continue reading →

In the neocortex, perisomatic inhibition onto principal pyramidal neurons (PNs) determines the dynamic range of pyramidal neuron responses during sensory processing and drive several forms of network oscillations, believed to be the network correlate of several cognitive functions. The inhibitory…  Continue reading →

Microglia, the macrophage of the CNS and peripheral macrophages, combined, have been implicated in Amyotrophic Lateral Sclerosis (ALS), the most common adult-onset motor neuron disease, but without discriminating their respective roles. Since we have shown that microglial cells participated to…  Continue reading →

Technologies for recording and manipulating neuronal membrane potential in vivo in defined neuronal populations with high fidelity will be essential to understand how information is represented, processed, and propagated in the brain. Genetically encoded voltage indicators and optogenetic actuators are…  Continue reading →