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Biased Connectivity of Brain-wide Inputs to Ventral Subiculum Output Neurons

Wee, RWS; MacAskill, AF; (2020) Biased Connectivity of Brain-wide Inputs to Ventral Subiculum Output Neurons. Cell Reports , 30 (11) 3644-3654.e6. 10.1016/j.celrep.2020.02.093. Green open access

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Abstract

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.

Type: Article
Title: Biased Connectivity of Brain-wide Inputs to Ventral Subiculum Output Neurons
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.celrep.2020.02.093
Publisher version: https://doi.org/10.1016/j.celrep.2020.02.093
Language: English
Additional information: © 2020 The Authors. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Keywords: hippocampus, long range input, optogenetics, projection specificity, rabies, subiculum
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Neuro, Physiology and Pharmacology
URI: https://discovery.ucl.ac.uk/id/eprint/10093819
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