Changes in Cardiac Autonomic Regulation after Acute Lung Exposure to Carbon Nanotubes: Implications for Occupational Exposure

Figure 2

Examples of the arterial pressure, ECG signals and of the corresponding pulse intervals. The signals refer to sequences during which SAP and PI of the fifth heart beat (i.e., lag 5, used for the high heart rate of rats, see Section 2 for details) changed in the same direction, either increasing, hypertension/bradycardia, or decreasing, hypotension/tachycardia (baroreflex sequences).