Dual Channel Miniscope for Imaging Neurons
Author Information
Author(s): Barbera Giovanni, Thapa Rashmi, Adhikari Navin, Li Yun, Lin Da-Ting
Primary Institution: National Institute on Drug Abuse, National Institutes of Health
Hypothesis
Can a dual channel miniscope improve the imaging of distinct neuronal populations in freely moving rodents?
Conclusion
The dual channel miniscope successfully imaged distinct neuronal populations in the medial prefrontal cortex of mice over several months.
Supporting Evidence
- The dual channel miniscope can track neurons for up to 5 months.
- Chromatic aberrations are corrected using an electrowetting lens.
- The design is open-source and can be built with inexpensive parts.
- Simultaneous imaging of distinct neuronal populations was achieved.
- Neurons were labeled with genetically encoded calcium indicators.
Takeaway
This study created a special camera that can see two different types of brain cells at the same time, helping scientists understand how they work together.
Methodology
The study involved designing a dual-channel miniscope that uses two different light sources to simultaneously image genetically distinct neuronal populations in mice.
Limitations
The frame rate on each channel is reduced to half the original frame rate, which may not be adequate for studying faster neural processes.
Participant Demographics
Mice used included Gad2-IRES-Cre and CaMKII-IRES-Cre; TardbpF/F strains, aged 3-13 months.
Digital Object Identifier (DOI)
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