Voltage Imaging with Periodic Structured Illumination
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We utilize periodic structured illumination with pseudo-HiLo (pHiLo) image reconstruction for in vivo voltage imaging. We demonstrate reduced signal from out-of-focus cells, that contaminates voltage activity for in-focus cells of interest, with pHiLo compared to traditional widefield recordings taken with uniform illumination and pseudo-widefield (pWF) reconstructions. We discuss tradeoffs between signal-to-background ratio, signal-to-noise ratio and temporal resolution for pHiLo in the context of high-speed voltage imaging in awake mice.
