Table 2.
Consumption-related behaviors across the microinjection period during non-experimental days.
| Licks/session2 | Amount consumed (mL) | Ethanol consumed (g/kg) | Lick bouts3 | |
|---|---|---|---|---|
| Week 1 | 839 ± 81 | 5.6 ± 0.5 | 0.91 ± 0.08 | 3.5 ± 0.8 |
| Week 21 | 889 ± 88 | 5.9 ± 0.5 | 0.92 ± 0.07 | 3.7 ± 1.0 |
| Week 3 | 968 ± 106 | 6.1 ± 0.6 | 1.0 ± 0.08 | 3.8 ± 1.0 |
| Week 4 | 980 ± 88 | 6.3 ± 0.6 | 0.99 ± 0.07 | 3.4 ± 1.1 |
| Week 5 | 1123 ± 179 | 6.2 ± 0.5 | 0.95 ± 0.06 | 4.2 ± 1.2 |
| Week 6 | 955 ± 159 | 5.8 ± 0.4 | 0.88 ± 0.06 | 4.4 ± 1.7 |
| Week 7 | 810 ± 133 | 5.5 ± 0.5 | 0.83 ± 0.07 | 4.3 ± 1.4 |
1
0.02 μg α-methyl 5-HT was microinjected on weeks 2–3, 0.2 μg on weeks 4–5, and 2.0 μg on weeks 6–7. Values here represent drinking parameters expressed during non-microinjection days. Repeated measures ANOVA did not identify any significant effect of week across the parameters listed.
2
Mean weekly values were calculated using data from Monday, Tuesday, and Friday from the week just after surgery and on injection weeks (see Materials and Methods). Values are reported as mean ± SEM (n = 8).
3
A lick bout is defined as continuous touches on the sipper spout without a pause in drinking longer than 20 s.