Fig. 1.

Representative original Finometer recording of blood pressure (BP), normalized integrated muscle sympathetic nerve activity (MSNA) neurogram, and beat-by-beat BP [systolic BP, mean arterial pressure (MAP), and diastolic BP] and heart rate (HR, beats/min) recordings. ●, processed beat-by-beat data in MSNA neurogram. When no MSNA was detected in a cardiac cycle, a value of zero was assigned to the cardiac cycle. Solid-line arrow, MAPIncrease following a spontaneous MSNA burst; dashed-line arrows, our speculation that when diastolic and systolic BPs were rising, the baroreflex should inhibit MSNA and tend to decrease HR (or suppress a HR increase that could be induced by other factors).