Figure 5.
Subject averaged response to hyperventilation maneuver. (A) Measured hemodynamic response to 60 s of hyperventilation. As in the breath holding task, the short separation measurement shows a more exaggerated response to the physiologic manipulation, exhibiting a decrease of 30% in BFi after the onset of hyperventilation. The matching long separation responses show a lesser degree of BFi reduction, and all blood flow can be seen to return to the baseline before the end of the hyperventilation trial. (B) For this maneuver, the heart rate increased significantly following the start of the trial, while the blood pressure was seen to reduce.