Figure 1.

Illustration of the methodology for SSARI analysis used for simultaneous BP and RBF recordings obtained in conscious rats. Adjacent segments of increasing length (0.5, 1, 5, 10, and 20 seconds) that exhibited a MAP difference of at least 5 mm Hg were identified. Autoregulatory indices are calculated for each adjacent segment pair (fractional change in RBF/fractional change in MAP) of each of the segment lengths. Illustrated are such adjacent segments with lengths: (A) 2.5 seconds, (B) 10 seconds, and (C) 20 seconds. The number of segments used for each segment length for SSARI calculations are provided in Table 1.