393019.fig.004a
(a)
393019.fig.004b
(b)
393019.fig.004c
(c)
Figure 4: Effect of removing coupled spike activity on total LFP power. (a) Histogram of the ratio of power in the LFP after removing components explained by SUA4 and power in the raw LFP ( recording sites). For a small number of sites, LFP power increased slightly, reflecting the introduction of a small amount of noise by the cross-validation procedure used for filter estimation. (b) Histogram of change in power after removing the SUA3 component. The average power was significantly lower than for SUA4 (jackknifed -test, ). (c) Histogram of change in power after removing the MUA component. The average power was significantly lower than for SUA3 (jackknifed -test, ).