Ultrastructural readout of in vivo synaptic activity for functional connectomics
Ultrastructural readout of in vivo synaptic activity for functional connectomics
复制标题
功能连接组学体内突触活动的超微结构读数
DOI:
10.1101/2021.07.07.451278
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Simon A
中科院分区:
文献类型:
--
作者:
Simon A
Large-volume ultrastructural mapping approaches yield detailed circuit wiring diagrams but lack an integrated synaptic activity readout which is essential for functional interpretation of the connectome. Here we resolve this limitation by combining functional synaptic labellingin vivowith focused ion-beam scanning electron microscopy (FIBSEM) and machine learning-based segmentation. Our approach generates high-resolution near-isotropic three-dimensional readouts of activated vesicle pools across large populations of individual synapses in a volume of tissue, opening the way for detailed functional connectomics studies. We apply this method to measure presynaptic activity in an ultrastructural context in synapses activated by sensory input in primary visual cortex in awake head-fixed mice, showing that the numbers of recycling and non-recycling vesicles approximate to a lognormal distribution across a large number of synapses. We also demonstrate that neighbouring boutons of the same axon, which share the same spiking activity, can differ greatly in their presynaptic release probability.
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影响因子:
56.9
作者:
BETZ, WJ;BEWICK, GS
通讯作者:
BEWICK, GS
影响因子:
56.9
作者:
Rizzoli, SO;Betz, WJ
通讯作者:
Betz, WJ
DOI:
--
发表时间:
2019
期刊:
bioRxiv
影响因子:
--
作者:
K. Dobson;Carmel L. Howe;Yuri Nishimura;Vincenzo Marra
通讯作者:
Vincenzo Marra
影响因子:
64.8
作者:
Smith SL;Smith IT;Branco T;Häusser M
通讯作者:
Häusser M
影响因子:
16.6
作者:
Stephanie Rey;Catherine Smith;Milena W. Fowler;Freya Crawford;J. Burden;K. Staras
通讯作者:
K. Staras