Figure 3.
Stacked bar graphs showing the mean amounts of time spent ambulating (black), stationary (dark grey) and rearing (light grey) during the first and final 180 seconds of a six-minute open field session for each group. For control (CTRL), gonadectomized (GDX), and GDX rats given testosterone propionate (GDX-TP) or estradiol (GDX-E), significantly different amounts of time were devoted to each principal behavior (*). In addition, during the second half of the session all groups spent significantly (#) more time stationary and less time ambulating than initially. However, there were no significant main effects of hormone treatment or significant interactions between hormone treatment and behavior.