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. 2012 Jan 25;32(4):1395–1407. doi: 10.1523/JNEUROSCI.3985-11.2012

Figure 3.

Figure 3.

Session summary of the information results. All results are shown as median over all sessions. A, Mutual information between BOLD signal and LFP power at different frequencies for different lags τ between the two signals (τ > 0 indicates that the BOLD signal has been shifted back with respect to the neural response). Only significant (p < 0.0001, bootstrap test, uncorrected for multiple comparisons) information values are colored. On the right, the information values are plotted only for lag τ = 3 s (orange line). The average spectrum of the LFPs is also shown (black line). B, Mutual information between the BOLD signal and the LFP power in selected frequency bands, and between the BOLD signal and MUA. The following four LFP bands are considered: alpha ([8–12 Hz], green line); beta ([18–30 Hz], red line); gamma ([40–100 Hz], blue line); and the total LFP power ([0–100 Hz], gray line); and MUA is computed as the power of the electrophysiological signal between 900 and 3000 Hz (cyan line). The inset shows the Pearson correlation between the BOLD signal and different LFP bands, and between the BOLD signal and MUA. Solid lines indicate the median over all sessions, and shaded areas indicate the range between the 40th and 60th percentile.