Table 3.
Mean ± SEM basal number of c-Fos-immunoreactive cells in the nucleus accumbens shell and core for control animals in experiments 1 and 2
| Anatomical division | Control group | |
|---|---|---|
| Experiment 1 | Experiment 2 | |
| Nucleus accumbens shell | ||
| Rostral | 33.08 ± 4.0 | 65.67 ± 4.6 |
| Middle | 25.08 ± 2.3 | 77.67 ± 4.8 |
| Caudal | 22.69 ± 3.6 | 72.33 ± 5.8 |
| Nucleus accumbens core | ||
| Rostral | 21.62 ± 3.5 | 53.33 ± 4.5 |
| Middle | 21.46 ± 2.9 | 52.93 ± 3.8 |
| Caudal | 19.15 ± 2.1 | 61.0 ± 4.2 |
Although it is not statistically appropriate to compare the levels of c-Fos expression between the control animals in experiments 1 and 2, it is clear that there are two- to three-fold higher baseline cell counts in experiment 2.