Fig. 9.

Performance of Sham and ovariectomized (groups OVX₁ and OVX₂) rats in platform (A) and probe (B) trials of the place discrimination task. The dotted line inB indicates chance level. The average speed of swimming during platform trials is shown in C. For treatments of OVX₁ (gray circles) and OVX₂ (gray triangles) groups, see Figure 1. Pound signs indicate a significant improvement in place discrimination attributable to retesting compared with period 1 (post hoc test applied to a significant effect of period; p < 0.05).Asterisks indicate a significant difference between control and ovariectomized rats (OVX₁ and OVX₂) as a result of a post hoc test applied to a significant effect of group (p< 0.05). Open squares, Sham.