Yameng Gu1, Feng Han1, Lucas Eugene Sainburg1, and Xiao Liu1
1Pennsylvania State Universitya, University Park, PA, United States
1Pennsylvania State Universitya, University Park, PA, United States
A sequence of brain dynamics led by salience network changes causes resting-state fMRI correlations with EEG alpha power and physiological signals.
Figure 3. (A) The average of fMRI time segments centering at sensory dominant co-activations (N=343). (B) The EEG alpha power, HR, RV changes in the same group of time segments. (C) Left: The alpha-rsfMRI correlation maps before and after regressing out the fMRI sequence in (A). Right: the lag-dependent alpha-rsfMRI correlation within the three ROIs before and after regressing out the fMRI sequence. The shaded regions represent area within 1 S.E.M. (D-E): The physio-rsfMRI correlation maps before and after regressing out the fMRI sequence.
Figure 2. RsfMRI correlations with physiological signals show similar patterns as the alpha-rsfMRI correlations. (A) The z-scored correlation maps of RV/HR with rsfMRI signals at various time lags are similar to the alpha-rsfMRI correlation maps. (B) Cross correlation function between the alpha-rsfMRI correlation maps and the RV/HR-rsfMRI correlation maps.