Figure 2. The time course of cerebral tissue carbon dioxide tension (PCO2brain, means +/- SD) during a 5-min baseline, 3 min of global cerebral ischemia, and 10 min of reperfusion at cerebral tissue temperatures (Tbrain) of 38 [degree sign] Celsius, 34.4 [degree sign] Celsius, and 29.4 [degree sign] Celsius (n = 10). The values of PCO2brain are given at actual Tbrain. For clarity, the SD is shown for every third value in a staggered manner.