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Amplitude of the SWEs drives the amplitude of the BOLD signal. (A) Illustration shows that higher numbers of SWEs and higher mean peak amplitudes of SWEs give rise to stronger mean F-values in the BOLD signal. (B) 3D scatter plot displays the correlation between mean F-values and the mean peak amplitude of SWEs (r = 0.79, P < 0.001) and between mean F-values and the number of SWEs (r = 0.85, P < 0.001). Individual dots marked with letters correspond to the examples in panel A.
