Prefrontal Cortex Drives Distinct Projection Neurons in the Basolateral Amygdala.
Prefrontal Cortex Drives Distinct Projection Neurons in the Basolateral Amygdala.
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前额叶皮层驱动杏仁核基底外侧的不同投射神经元
DOI:
10.1016/j.celrep.2017.10.046
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发表时间:
2017-11-07
期刊:
影响因子:
8.8
通讯作者:
Carter AG
中科院分区:
文献类型:
--
作者:
McGarry LM;Carter AG
The prefrontal cortex (PFC) regulates emotional behavior via top-down control of the basolateral amygdala (BLA). However, the influence of PFC inputs on the different projection pathways within the BLA remains largely unexplored. Here we combine whole-cell recordings and optogenetics to study these cell-type specific connections in the mouse BLA. We characterize PFC inputs onto three distinct populations of BLA neurons that project to either the PFC, ventral hippocampus or Nucleus Accumbens. We find that PFC-evoked synaptic responses are strongest at amygdala-cortical and amygdala-hippocampal neurons, and much weaker at amygdala-striatal neurons. We assess the mechanisms for this targeting, and conclude that it reflects fewer connections onto amygdala-striatal neurons. Given the similar intrinsic properties of these cells, this connectivity allows the PFC to preferentially activate amygdala-cortical and amygdala-hippocampal neurons. Together, our findings reveal how PFC inputs to the BLA selectively drive feed-back projections to the PFC and feed-forward projections to the hippocampus. McGarry and Carter report that the prefrontal cortex (PFC) contacts three distinct populations of projection neurons in the BLA, with the strongest inputs onto neurons that project back to PFC and forward to hippocampus, and weakest inputs onto neurons that project to the striatum.
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