Figure 3.

fUSI signals and firing rates are correlated across hemispheres

(A) fUSI traces measured during spontaneous activity in an example recording, in an ROI in the left visual cortex (top) and in a symmetrical ROI in the right visual cortex (bottom).

(B) Filtered firing rates measured simultaneously in the left ROI.

(C) Correlations between the fUSI voxels in the left ROI (white contour) and all the other fUSI voxels.

(D) Correlations between the filtered firing rates measured in the left ROI (plus sign) and all the individual fUSI voxels.

(E) Correlations between fUSI signals in the left and right visual cortices (left) and between filtered firing rates and simultaneous fUSI signals in the same location in the visual cortex (center) and in the opposite hemisphere (right). Black dot and error bars show median ± MAD across n = 68 recordings during spontaneous activity and visual stimulation.

(F–J) Same analyses for recordings where firing rates and fUSI were measured in hippocampus (n = 58 recordings).