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Representative averaged traces of mean arterial pressure (MAP) and heart rate (HR, beats/min) following spontaneous bursts of muscle sympathetic nerve activity (MSNA) during 6 min of recording in a smoker. Traces were aligned to the peak time of each identified MSNA burst. In the averaged curves, maximal MAP increase (MAPIncrease) and HR decrease (HRDecrease) occurred ~5–7 s after the peak of MSNA.
