Figure 1. Rat sexual behavioral pattern following sleep deprivation and treatment with RibCys and/or Zn. At a p<0.05 level, a indicates significant difference from PSD+RibCys, PSD+Zn, PSD+RibCys+Zn and Control while b indicates a significant difference from PSD+Zn, PSD+RibCys+Zn and Control. c indicates a significant difference from PSD+RibCys+Zn and Control. c while d indicates a significant difference from Controls. PSD=Paradoxical sleep deprivation, RibCys=Riboceine, Zn=Zinc