Figure 4. Experiment 2: Rats exposed only to sight, sound and smell of estrous females do not exhibit anticipatory activity.

Group average waveforms: Panels A–C, home cage motion, mating cage access tube and running wheel activity, respectively, in Group 2 rats (n = 6}. Panel D, home cage motion in Group 3 rats (N = 6}. The shaded curves represent baseline prior to scheduled daily exposure to estrous females. The heavy (blue} curves represent scheduled exposure days 51–60. The green curves represent days 71–80. See Figure 2D–F for other plotting conventions.