Detection of a temporal error triggers reconsolidation of amygdala-dependent memories.

Detection of a temporal error triggers reconsolidation of amygdala-dependent memories.
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DOI:
10.1016/j.cub.2013.01.053
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发表时间:
2013-03-18
期刊:
影响因子:
9.2
通讯作者:
Doyere, Valerie
Doyere, Valerie
中科院分区:
生物学1区
文献类型:
--
作者:
Diaz-Mataix, Lorenzo;Ruiz Martinez, Raquel Chacon;Schafe, Glenn E.;LeDoux, Joseph E.;Doyere, Valerie

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更新记忆对于适应性行为至关重要,但管理这一过程的规则和机制仍然没有得到很好的定义。在有限的时间窗内,巩固的厌恶记忆的重新激活触发记忆不稳定性,并诱导外侧杏仁核(LA)的可塑性依赖性再巩固过程。然而,尚不清楚是否需要新的信息来启动重新合并。在这里,我们表明,改变条件(CS)和无条件(US)刺激之间的时间关系在重新激活是足以触发突触可塑性和重新巩固的厌恶记忆在LA。这些研究结果表明,时间是CS-US关联的核心部分,并且在再激活期间必须呈现新的信息以触发LA依赖的再巩固过程。总之,这项研究提供了新的基础知识,关于管理厌恶记忆的记忆再巩固的精确规则,这些规则可能用于治疗创伤记忆。
Updating memories is critical for adaptive behaviors, but the rules and mechanisms governing that process are still not well defined. During a limited time window, the reactivation of consolidated aversive memories triggers memory lability and induces a plasticity-dependent reconsolidation process in the lateral amygdala (LA). However, whether new information is necessary for initiating reconsolidation is not known. Here we show that changing the temporal relationship between the conditioned (CS) and unconditioned (US) stimulus during reactivation is sufficient to trigger synaptic plasticity and reconsolidation of an aversive memory in the LA. These findings demonstrate that time is a core part of the CS-US association, and that new information must be presented during reactivation in order to trigger LA-dependent reconsolidation processes. In sum, this study provides new basic knowledge about the precise rules governing memory reconsolidation of aversive memories that might be used to treat traumatic memories.
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