Prefrontal circuits encode both general danger and specific threat representations - Archive ouverte HAL
Article Dans Une Revue Nature Neuroscience Année : 2023

Prefrontal circuits encode both general danger and specific threat representations

Résumé

Behavioral adaptation to potential threats requires both a global representation of danger to prepare the organism to react in a timely manner but also the identification of specific threatening situations to select the appropriate behavioral responses. The prefrontal cortex is known to control threat-related behaviors, yet it is unknown whether it encodes global defensive states and/or the identity of specific threatening encounters. Using a new behavioral paradigm that exposes mice to different threatening situations, we show that the dorsomedial prefrontal cortex (dmPFC) encodes a general representation of danger while simultaneously encoding a specific neuronal representation of each threat. Importantly, the global representation of danger persisted in error trials that instead lacked specific threat identity representations. Consistently, optogenetic prefrontal inhibition impaired overall behavioral performance and discrimination of different threatening situations without any bias toward active or passive behaviors. Together, these data indicate that the prefrontal cortex encodes both a global representation of danger and specific representations of threat identity to control the selection of defensive behaviors. © 2023, The Author(s), under exclusive licence to Springer Nature America, Inc.
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Dates et versions

hal-04569370 , version 1 (06-05-2024)

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Citer

Mario Martin-Fernandez, Ana Paula Menegolla, Guillem Lopez-Fernandez, Nanci Winke, Daniel Jercog, et al.. Prefrontal circuits encode both general danger and specific threat representations. Nature Neuroscience, 2023, 26 (12), pp.2147-2157. ⟨10.1038/s41593-023-01472-8⟩. ⟨hal-04569370⟩

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