Figure 3.

Effects of encounter stimulation on extracellular levels of DA and 5-HT in the prefrontal cortex (a) and nucleus accumbens shell (b) of mice. A male group- or isolation-reared mouse or female isolation-reared mouse was placed in a novel clear Plexiglas cage divided into two compartments by a mesh partition. After a 3-h habituation period, an unfamiliar intruder of the same sex as the resident was placed into the unoccupied compartment and the mice were allowed to interact for 20 min, as indicated by the horizontal bar. The data are expressed as the mean±SEM of 10 mice/group.