Table 4.

Percentage of TH neurons showing hcrt/orx appositions, Fos, or both

Level of VTA TreatmentTH-hcrt/orxTH-Fos (nonapposed)TH-Fos-hcrt/orx
Rostral
    Noncopulation (n = 6)47.6 ± 6.8a1.3 ± 0.8a0a
    Copulation (n = 6)53.7 ± 8.7a0.9 ± 0.9a9.5 ± 3.9b
Middle 1
    Noncopulation (n = 5)12.5 ± 2.1b0a0a
    Copulation (n = 6)10.3 ± 1.2b0.8 ± 0.3a2.2 ± 0.7b,c
Middle 2
    Noncopulation (n = 6)6.2 ± 0.9b0a0a,c
    Copulation (n = 6)6.0 ± 0.9b0.8 ± 0.4a0.5 ± 0.3a,c
Caudal
    Noncopulation (n = 5)5.2 ± 0.6b0a0a,c
    Copulation (n = 6)3.5 ± 0.4b0.1 ± 0.1a0a,c
  • In each counting column, means ± SEM with the same lowercase letter do not differ significantly (p < 0.05).