Abstract
To record optical correlates of fast electrical activation, we are developing techniques to improve the contrast of these small signals. Dark-field illumination significantly reduces background light not scattered by neural processes, however the signal-to-noise remains small. Optimization of polarized light birefringence signals can improve the signal-to-noise by 10-100 fold. Progressive elimination of light not altered by neural processes greatly improves fast optical signals for neural recording.
© 2004 Optical Society of America
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