In Vivo Imaging of Dentate Gyrus Mossy Cells in Behaving Mice.

In Vivo Imaging of Dentate Gyrus Mossy Cells in Behaving Mice.
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DOI:
10.1016/j.neuron.2016.12.019
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发表时间:
2017-02-08
期刊:
影响因子:
16.2
通讯作者:
Losonczy A
Losonczy A
中科院分区:
医学1区
文献类型:
--
作者:
Danielson NB;Turi GF;Ladow M;Chavlis S;Petrantonakis PC;Poirazi P;Losonczy A

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Mossy cells in the hilus of the dentate gyrus constitute a major excitatory principal cell type in the mammalian hippocampus, however, it remains unknown how these cells behave in vivo. Here, we have used two-photon Ca2+ imaging to monitor the activity of mossy cells in awake, behaving mice. We find that mossy cells are significantly more active than dentate granule cells in vivo, exhibit spatial tuning during head-fixed spatial navigation, and undergo robust remapping of their spatial representations in response to contextual manipulation. Our results provide the first characterization of mossy cells in the behaving animal and demonstrate their active participation in spatial coding and contextual representation. Danielson et al. monitored the activity of hippocampal mossy cells in vivo. They show that as a population, mossy cells are an active place coding population engaged in contextual encoding.
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