Fig. 2

Change in baseline CBF. The values of baseline CBF, obtained during normoxia, were considered to be 100%, indicated by a dashed line. Black and gray bars indicate the baseline CBF during hypoxia without LNA and hypoxia with LNA, respectively. The white bar indicates the baseline CBF during normoxia with LNA, which was obtained in the previous study [1]. The data were normalized to those under normoxia without LNA after statistical analysis. To evaluate the changes in baseline CBF, the absolute value of the baseline CBF was statistically compared for each animal group by paired t test. Note that the baseline CBF during hypoxia with LNA was not significantly different from that during normoxia, whereas the baseline CBF was higher during hypoxia without LNA than during normoxia. Asterisks indicate significant differences in levels of baseline CBF between hypoxia without LNA and normoxia without LNA, and normoxia with LNA and normoxia without LNA (P < 0.05). Error bars are SD