Olfactory bulb slices of M/T-GCaMP3 mice were imaged at P2. Representative imaging sessions (top-left), with individual traces shown (top-right, shown in gray, green, and purple). A montage of serial ΔF/F images (middle, highlighted in shadowed area in the raster plot), raster plots, and correlation index histograms (bottom) are also shown. A correlation index threshold of 5 (orange dotted lines) was selected to differentiate between highly correlated (H-) and lowly correlated (L-) events. We obtained similar results with M/T-GCaMP6f. Scale bars, 100 μm. See also Videos S4 and S5.
