Figure 4.

Latent memory decays by 4 d. Phase I: Trained animals (n = 7) exhibited robust LTM after sensitization training. Phase II: Four days following the decay of LTM, animals received two spaced tail shocks (TS). Memory was tested at 2 and 24 h following Phase II training. No memory was exhibited at 2 h or 24 h in previously trained animals or matched controls (n = 7).