Figure 1. Illustration of schedule of experiment B. I = intraperitoneal injection of FG-7142; S = electric shocks; L = light/dark test; F = freeze test; P = PIXImus scan; E = Euthanasia.

The light/dark test was conducted on day 3, and repeated every other week twice; the freeze test on day 6, and repeated every other week for three times; the PIMImus scan at week 2 and 3, and repeated every other week for two more times.