Table 1.
Percentage of flat and frequency-modulated (FM) calls out of all 50 kHz USVs recorded during 5 min sessions. Only rat pairs that emitted 50 kHz calls were included in this analysis (aday 1–2: N = 4–7; bday 1–4: N = 11; cday 1–2: N = 3–4; dday 1–4: N = 9–12).
| Manipulations |
||||||||
|---|---|---|---|---|---|---|---|---|
| Controla |
Ball pitb |
Controlc |
Playpend |
|||||
| Flat50 kHz calls | FM50 kHz calls | Flat50 kHz calls | FM50 kHz calls | Flat50 kHz calls | FM50 kHz calls | Flat50 kHz calls | FM50 kHz calls | |
| Day 1 | 3.1 | 96.9 | 5.70 | 94.30 | 25.0 | 75.0 | 3.23 | 96.77 |
| Day 2 | 5.8 | 94.2 | 3.08 | 96.92 | 0.0 | 100.0 | 4.68 | 95.32 |
| Day 3 | n/a | n/a | 3.10 | 96.90 | n/a | n/a | 2.13 | 97.87 |
| Day 4 | n/a | n/a | 2.63 | 97.37 | n/a | n/a | 5.71 | 94.29 |