An inhibitory hippocampal-thalamic pathway modulates remote memory retrieval.
An inhibitory hippocampal-thalamic pathway modulates remote memory retrieval.
复制标题
抑制性海马-丘脑通路调节远程记忆检索。
DOI:
10.1038/s41593-021-00819-3
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发表时间:
2021-05
影响因子:
25
通讯作者:
Frankland PW
中科院分区:
文献类型:
--
作者:
Vetere G;Xia F;Ramsaran AI;Tran LM;Josselyn SA;Frankland PW
Memories are supported by distributed hippocampal–thalamic–cortical networks, but the brain regions that contribute to network activity may vary with memory age. This process of reorganization is referred to as systems consolidation, and previous studies have examined the relationship between the activation of different hippocampal, thalamic, and cortical brain regions and memory age at the time of recall. While the activation of some brain regions increases with memory age, other regions become less active. In mice, here we show that the active disengagement of one such brain region, the anterodorsal thalamic nucleus, is necessary for recall at remote time-points and, in addition, which projection(s) mediate such inhibition. Specifically, we identified a sparse inhibitory projection from CA3 to the anterodorsal thalamic nucleus that becomes more active during systems consolidation, such that it is necessary for contextual fear memory retrieval at remote, but not recent, time-points post-learning.
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