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SRC - Gestion
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Fear learning induces synaptic potentiation between engram neurons in the rat lateral amygdala
Henry Markram, Rodrigo de Campos Perin
The lateral amygdala (LA) encodes fear memories by potentiating sensory inputs associated with threats and, in the process, recruits 10-30% of its neurons per fear memory engram. However, how the local network within the LA processes this information and w ...
Nature Portfolio2024A theory of memory consolidation and synaptic pruning in cortical circuits
Over the course of a lifetime, the human brain acquires an astonishing amount of semantic knowledge and autobiographical memories, often with an imprinting strong enough to allow detailed information to be recalled many years after the initial learning exp ...
EPFL2023Noninvasive deep brain stimulation to modulate human behavior by means of transcranial temporal interference electrical stimulation
All functions we use in our everyday life depend on a complex interplay between both cortical and subcortical brain areas, communicating in between each others. When a region is affected by either an accident, aging or neurodegenerative diseases, the whole ...
EPFL2023Engram cell connectivity as a mechanism for information encoding and memory function
Information derived from experiences is incorporated into the brain as changes to ensembles of cells, termed engram cells, which allow memory storage and recall. The mechanism by which those changes hold specific information is unclear. Here, we test the h ...
Cambridge2023Plasticity of sensory representations in the posterior insular cortex during fear learning
Aversively-motivated associative learning allows animals to avoid harm and thus ensures survival. Aversive learning can be studied by the fear learning paradigm, in which an innocuous sensory stimulus like a tone (conditioned stimulus, CS), acquires a nega ...
EPFL2023A dynamic attractor network model of memory formation, reinforcement and forgetting
Wulfram Gerstner, Chiara Gastaldi, Marta Boscaglia
Empirical evidence shows that memories that are frequently revisited are easy to recall, and that familiar items involve larger hippocampal representations than less familiar ones. In line with these observations, here we develop a modelling approach to pr ...
San Francisco2023Prefrontal engrams of long-term fear memory perpetuate pain perception
A painful episode can lead to a life-long increase in an individual's experience of pain. Fearful anticipation of imminent pain could play a role in this phenomenon, but the neurobiological underpinnings are unclear because fear can both suppress and enhan ...
NATURE PORTFOLIO2023