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. 2010 Nov 11;110(2):352–358. doi: 10.1152/japplphysiol.00802.2010

Fig. 4.

Fig. 4.

Cerebral hemodynamic responses to hypercapnia. All cerebral hemodynamic responses are linearly (P < 0.001) associated with increase in PtcCO2 during rebreathing. The rates of cerebral hemodynamic responses to hypercapnia are significantly greater at rest than during LBNP (−15 Torr). The slopes of MCAV/PtcCO2 (cm·s−1·mmHg−1) are 3.38 vs. 1.90 (P = 0.0001); cerebral vascular conductance (CVC)/PtcCO2 (unit/mmHg) are 0.026 vs. 0.017 (P = 0.0162); and ScO2/PtcCO2 (%/mmHg) are 1.13 vs. 0.83 (P = 0.0434). Solid line, regression line at rest; dash line, regression line during LBNP.