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A: original beat-by-beat recording of forearm blood flow (BF) and mean arterial pressure (MAP) during 90 s of rest. B: MAP-BF correlations using time-aligned data (0 offset) and data incorporating a −2-heart beat offset. C: cross correlation of MAP and BF from one subject with MAP offsets ranging from −10 to +10 heart beats. D: summary data of cross correlations between MAP and forearm BF (n = 12, means ± SE).
