Fig. 6.

Cardiorespiratory responses to sciatic nerve stimulation. A: effect of sciatic nerve stimulation (0.5 Hz) on mean blood pressure (BP), heart rate (HR), PND rate, and amplitude of rectified PND (PNDr) expressed as % of the largest amplitude recorded in each preparation (typically at 10% eeCO₂) for the number of animals indicated. Each point represents the average of multiple periods of rest or stimulation for a given rat. The mean (±SE) value is also shown. B: relationship between the degree of respiratory stimulation elicited by sciatic nerve stimulation (delta PND rate and delta PND amplitude) and the baseline value of these variables. The regression coefficient, significance value, and number of measurements are indicated.