Figure 9.

Observed freezing data (circles) and predicted data (lines) of the study by Frankland et al. (2001) using the assumption of zero consolidation in the experimental condition (see text). Open circles refer to experimental subjects (mice), closed circles to controls. (A) Forgetting curves after learning with three foot shocks. (B) Forgetting curves after learning with eight foot shocks. (C) Forgetting curves after learning with one foot shock (controls) and eight foot shocks (experimental). (D) Repeated learning in experimental animals receiving one foot shock per day. The observed data are averaged over two conditions (see text for details).