Figure 2: Cumulative burying. Cumulative burying time was significantly less ( , SNK post hoc test) in the groups treated with 0.5 and 1 mL of the artificial FAT mixture and diazepam than in the groups treated with vehicle and the other artificial FAT mixture volumes. The data points of the dose-response curve were fit to a logarithmic curve . FAT, fatty acid; VEH, vehicle of fatty acid mixture; DZP, diazepam.