Topographic representation of current and future threats in the mouse nociceptive amygdala

Nat Commun. 2023 Jan 13;14(1):196. doi: 10.1038/s41467-023-35826-4.

Abstract

Adaptive behaviors arise from an integration of current sensory context and internal representations of past experiences. The central amygdala (CeA) is positioned as a key integrator of cognitive and affective signals, yet it remains unknown whether individual populations simultaneously carry current- and future-state representations. We find that a primary nociceptive population within the CeA of mice, defined by CGRP-receptor (Calcrl) expression, receives topographic sensory information, with spatially defined representations of internal and external stimuli. While Calcrl+ neurons in both the rostral and caudal CeA respond to noxious stimuli, rostral neurons promote locomotor responses to externally sourced threats, while caudal CeA Calcrl+ neurons are activated by internal threats and promote passive coping behaviors and associative valence coding. During associative fear learning, rostral CeA Calcrl+ neurons stably encode noxious stimulus occurrence, while caudal CeA Calcrl+ neurons acquire predictive responses. This arrangement supports valence-aligned representations of current and future threats for the generation of adaptive behaviors.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Animals
  • Central Amygdaloid Nucleus*
  • Conditioning, Classical
  • Fear / physiology
  • Mice
  • Neurons / metabolism
  • Nociception*