Fig. 4

Change in normalized evoked CBF during normoxia, normoxia with LNA, and hypoxia with LNA. a Normalized evoked CBF during normoxia without LNA and normoxia with LNA (cited from reference [1]). b Normalized evoked CBF during normoxia without LNA and hypoxia with LNA. Curves were normalized to the baseline level and shown for one representative animal. Horizontal and vertical bars indicate the stimulation period and 10% increase from baseline level, respectively. c Peak amplitude of normalized evoked CBF under normoxia and hypoxia with LNA. Each line corresponds to the data obtained from one rat. Bold lines and error bars indicate the mean value and SD, respectively (n = 8). No significant difference in the peak amplitude of normalized evoked CBF between normoxia and hypoxia with LNA was observed