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

Topographic representation of current and future threats in the mouse nociceptive amygdala.
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DOI:
10.1038/s41467-023-35826-4
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发表时间:
2023-01-13
影响因子:
16.6
通讯作者:
Palmiter RD
Palmiter RD
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Bowen AJ;Huang YW;Chen JY;Pauli JL;Campos CA;Palmiter RD

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适应性行为源于当前感觉环境和过去经验的内部表征的整合。中央杏仁核(CeA)被定位为认知和情感信号的关键整合器,但仍不清楚个体人群是否同时携带当前和未来状态表征。我们发现,一个主要的伤害性群体内的CeA的小鼠,由CGRP受体(Calcrl)的表达,接收地形的感觉信息,与空间定义的代表性的内部和外部刺激。虽然喙和尾侧CeA中的Calcrl+神经元对伤害性刺激做出反应,但喙侧神经元促进对外部来源的威胁的运动反应,而尾侧CeA Calcrl+神经元被内部威胁激活,并促进被动应对行为和关联价编码。在联想性恐惧学习过程中,头端CeA Calcrl+神经元稳定地编码伤害性刺激的发生,而尾端CeA Calcrl+神经元获得预测性反应。这种安排支持当前和未来威胁的价对齐表示,以生成自适应行为。适应性行为需要使用记忆和持续的经验。在这里,作者发现杏仁核神经元地形编码感官刺激,包括预测与正在进行的威胁,以促进适当的行为。
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. Adaptive behavior requires using both memories and ongoing experience. Here, the authors find that amygdala neurons topographically encode sensory stimuli including predicted versus ongoing threats to contribute to appropriate behaviors.
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