Miniaturized head-mounted microscope for whole-cortex mesoscale imaging in freely behaving mice.

Miniaturized head-mounted microscope for whole-cortex mesoscale imaging in freely behaving mice.
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DOI:
10.1038/s41592-021-01104-8
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发表时间:
2021-04
期刊:
影响因子:
48
通讯作者:
Kodandaramaiah SB
Kodandaramaiah SB
中科院分区:
生物学1区
文献类型:
--
作者:
Rynes ML;Surinach DA;Linn S;Laroque M;Rajendran V;Dominguez J;Hadjistamoulou O;Navabi ZS;Ghanbari L;Johnson GW;Nazari M;Mohajerani MH;Kodandaramaiah SB

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The advent of genetically encoded calcium indicators, along with surgical preparations such as thinned skulls or refractive index matched skulls, have enabled mesoscale cortical activity imaging in head-fixed mice. However, neural activity during unrestrained behavior substantially differs from neural activity in head-fixed animals. For whole-cortex imaging in freely behaving mice, we here present the “mini-mScope,” a wide-field, miniaturized, and head-mounted fluorescence microscope compatible with transparent polymer skull preparations. With a field of view of 8 mm x 10 mm and weighing less than 4 g, the mini-mScope can image most of the mouse dorsal cortex with resolution ranging from 39 to 56 μm. We have used the mini-mScope to record mesoscale calcium activity across the dorsal cortex during sensory-evoked stimuli, open field behaviors, social interactions, and transitions from wakefulness to sleep.
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