Figure 5. Experiment 3: Rats anticipate both late night (ZT21} and midday (ZT6} scheduled mating when provided access to a single female for a full hour to increase ejaculation rates.

Each actogram represents total activity (the sum of activity counts registered by the overhead motion sensor and the two tube sensors} in 6 of 8 rats (A–F, corresponding to rats 1–6 in Figure S3}. The daily mating hour is denoted by the opaque vertical bars outlined in red. See Figure 1 for other plotting conventions.