Figure 8.

Signal to noise ratios of LFP and MUA. A, The scatter plot of LFP S/N ratio (x-axis) and MUA S/N ratio (y-axis). Vertical and horizontal dashed lines (at the value of 1.5) represent the criteria we used to determine whether a VSmap has large enough S/N ratio for LFP and MUA for the site to be considered “mappable.” The distribution of LFP S/N ratios and MUA S/N ratios are plotted in two subplots along the x and y axes of A. B, S/N ratio of the LFP was plotted as a function of cortical depth. C, S/N ratio of MUA was plotted as a function of cortical depth.