CRHR2 and psychosocial stress measurement: Psychological stress activates MePD neurons expressing CRF receptor type 2 (CRF-R2) mRNA (34) and CRF-R2 expressing neurons in the medial amygdala are predominantly GABAergic (35), suggesting a CRF-R2 phenotype in MePD GABA neurons may tune subsets of neurons to stress cues rather than social ones.