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Showing 1–10 of 10 results
Advanced filters: Author: Stephane Ciocchi Clear advanced filters

  • Neural mechanisms underlying reinforcement learning in naturalistic environments are not fully understood. Here authors show that reinforcement learning (RL) agents with hippocampal-like recurrence, unlike feedforward networks, match animal behaviour and neural data in navigation tasks, revealing that hippocampal circuits support RL in naturalistic environments.

    • Dabal Pedamonti
    • Samia Mohinta
    • Rui Ponte Costa
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-16

  • The central amygdala relies on inhibitory circuitry to encode fear memories, but how this information is acquired and expressed in these connections is unknown. Two new papers use a combination of cutting-edge technologies to reveal two distinct microcircuits within the central amygdala, one required for fear acquisition and the other critical for conditioned fear responses. Understanding this architecture provides a strong link between activity in a specific circuit and particular behavioural consequences.

    • Wulf Haubensak
    • Prabhat S. Kunwar
    • David J. Anderson
    Research
    Nature
    Volume: 468, P: 270-276

  • The central amygdala relies on inhibitory circuitry to encode fear memories, but how this information is acquired and expressed in these connections is unknown. Two new papers use a combination of cutting-edge technologies to reveal two distinct microcircuits within the central amygdala, one required for fear acquisition and the other critical for conditioned fear responses. Understanding this architecture provides a strong link between activity in a specific circuit and particular behavioural consequences.

    • Stephane Ciocchi
    • Cyril Herry
    • Andreas Lüthi
    Research
    Nature
    Volume: 468, P: 277-282

  • The neuronal mechanisms serving contextual memories of socially rewarding stimuli are unclear. Here the authors demonstrate that neurons in the ventral hippocampus of male mice discriminate between neutral and socially rewarding contexts, a process dependent on input from the locus coeruleus.

    • Joana Mendes Duarte
    • Robin Nguyen
    • Stéphane Ciocchi
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-15

  • The mechanisms by which the brain processes the intertwined states of anxiety and fear remain unclear. Here, authors show that distinct inhibitory microcircuits in the ventral hippocampus differentially regulate anxiety and fear behaviors.

    • Kaizhen Li
    • Konstantinos Koukoutselos
    • Stéphane Ciocchi
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-13

  • The central amygdala inhibitory microcircuits mediate fear extinction by reversible, stimulus- and context-specific changes in neuronal responses. These alterations are absent when extinction is deficient and selective silencing of PKCδ neurons impairs fear extinction.

    • Nigel Whittle
    • Jonathan Fadok
    • Stéphane Ciocchi
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-11

  • Changes in the balance of activity of two distinct neuronal populations in the basolateral amygdala trigger transitions between states of high and low fear in mice. The two populations of neurons tend to participate in different anatomical circuits, suggesting that even within a single brain area, selective activation of specific neuronal circuits can trigger large changes in behavioral state.

    • Cyril Herry
    • Stephane Ciocchi
    • Andreas Lüthi
    Research
    Nature
    Volume: 454, P: 600-606

  • Population activity of neurons in the prefrontal cortex has been shown to represent cognitive strategy and rules. Here the authors report that when the same rule is repeated on multiple occasions in the task, it is accompanied each time by a new prefrontal firing rate state.

    • Hugo Malagon-Vina
    • Stephane Ciocchi
    • Thomas Klausberger
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-13