Fig. 4

The CVAR index calculation process in the time domain (Control NO.8). a The preprocess signals. b Extracted slow frequency wave (0.005–0.05 Hz). c Average slow oscillations of ABP, ICP and MIPS every 10 s. d PRx and CRx calculated with moving Pearson’s correlation coefficient. Slow oscillations change in ABP, ICP and MIPS from e control rabbit (No. 8) and f ischemic rabbit (No. 4)