Figure 1.
Experimental design: In experiments 1 & 2, female prairie voles underwent injections of haloperidol, apomorphine, or vehicle prior to pairing with a new same-sex partner, followed by partner preference testing (PPT). The vehicle group in experiment 2 subsequently underwent socially conditioned place preference (SCPP) testing; in experiment 3, a new cohort of voles was also re-paired prior to SCPP, and thus the two groups were pooled (indicated with an asterisk) for SCPP analysis. Voles were re-paired with a new same-sex partner prior to SCPP (½ no injection, ½ vehicle injection), re-paired with a new-same sex partner and given a dose of haloperidol, or were not re-paired (½ no injection, ½ vehicle injection).