Researchers report a wireless optoelectronic photometer that incorporates an ultrathin, lightweight injectable probe, a detachable transponder, and miniature power supply for recording neural activity in freely moving animals; the researchers demonstrated that the wireless photometer was also associated with reduced anxiety-like behavior in mice during behavioral tests, compared with a traditional fiber optic system, and could be used to measure neuronal activity in freely moving mice.
Article #17-18721: "Wireless optoelectronic photometers for monitoring neuronal dynamics in the deep brain," by Luyao Lu et al.
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Proceedings of the National Academy of Sciences