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Biased Connectivity of Brain-wide Inputs to Ventral Subiculum Output Neurons.
Cell Reports ( IF 7.5 ) Pub Date : 2020-03-17 , DOI: 10.1016/j.celrep.2020.02.093
Ryan W S Wee 1 , Andrew F MacAskill 1
Affiliation  

The ventral subiculum (vS) of the mouse hippocampus coordinates diverse behaviors through heterogeneous populations of pyramidal neurons that project to multiple distinct downstream regions. Each of these populations of neurons is proposed to integrate a unique combination of thousands of local and long-range synaptic inputs, but the extent to which this occurs remains unknown. To address this, we employ monosynaptic rabies tracing to study the input-output relationship of vS neurons. Analysis of brain-wide inputs reveals quantitative input differences that could be explained by a combination of both the identity of the downstream target and the spatial location of the postsynaptic neurons within vS. These results support a model of combined topographical and output-defined connectivity of vS inputs. Overall, we reveal prominent heterogeneity in brain-wide inputs to the vS parallel output circuitry, providing a basis for the selective control of individual projections during behavior.

中文翻译:

全脑输入到腹侧下丘脑输出神经元的偏向连接性。

小鼠海马的腹下支(vS)通过锥体神经元的异质群体协调不同的行为,这些锥体神经元投射到多个不同的下游区域。这些神经元种群中的每一个都被提议整合成千上万的局部和远程突触输入的独特组合,但是这种发生的程度仍然未知。为了解决这个问题,我们采用单突触狂犬病追踪来研究vS神经元的输入输出关系。对全脑输入的分析揭示了定量输入差异,可以通过下游目标的身份与vS内突触后神经元的空间位置的组合来解释。这些结果支持了vS输入的地形和输出定义的连通性组合模型。总体,
更新日期:2020-03-19
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