Figure 2.

Mean trends of the MBP and their analytical expressions. M_k(t)MBP is the mean trend of order k, a function representing the MBP history. The highest order, M_n(t), has no oscillations. The number n is data specific. M_k(t)MBP with k < n contains oscillations of various degree (see Eq. 4). (Upper) M_k(t) for various values of k. (Lower) One example at a larger scale and the curve fitting by Eqs. 6 and 7 is illustrated. The coefficients of the fitted curves are listed in Table 1 except for the case of rat no. 1212, which was not subjected to hypoxia. For the normal rat 1212, the mean trends of order 16 and the analytic approximation of M₁₆(t) are shown in the lowest left panel.