BDNF and ischemic stroke: In Figure 1 and Table 2, it is apparent that the serum BDNF levels peaked at time point 2 on Day 14 of the stroke in A-Rehab-Traditional-AR, B-Rehab-AR, and C-OPO patients (ΔBDNF day14−initial in Table 1), directly after the first study phase following the ischemic stroke incident.