Table 1.

Summary of optical filters (all from Olympus).

GECIs	Optical filters
GCaMP3, G-GECOs, OGB-1	DM: 570 nm
	Em: 495–540 nm
R-GECO1	DM: 570 nm
	Em: 575–630 nm
GEM-GECO1	DM: 485 nm
	Em: 420–460 nm (“blue”), 495–540 nm (“green”)