Receptor autoradiograms illustrating oxytocin receptor binding sites in the forebrain of rat, mouse, and prairie vole. Receptor distribution is conserved in some regions, including the lateral septum (LS), bed nucleus of the stria terminalis (BnST), central nucleus of the amygdala (CeA), and ventromedial nucleus of hypothalamus (VMH). There are species differences for other regions: In rat striatum, oxytocin receptors are restricted to dorsal caudate putamen (CP) and nucleus accumbens shell (NAccSh), whereas oxytocin receptors are abundant throughout prairie vole striatum and not detectable in mouse striatum. Figure adapted from Burbach et al. (2006).