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Examples of ongoing BOLD, RRI, and respiration signals and corresponding averaged waves (±SE) for two subjects, one with dominant 0.1-Hz [1Rb1 (A)] and one with dominant 0.15-Hz oscillations [11Ra1 (B)]. The vertical dashed lines in the panels on the left-hand side indicate maxima (peaks) of RRI oscillations used as trigger for averaging. Peaks of the averaged waves are indicated in the panels on the right-hand side.
