Table 2. Brain regions assessed for laser-recruited changes in Fos expression.

Laser induced enhancements in Fos expression were assessed in the listed mesocorticolimbic brain regions, following CRF-expressing neuronal excitation in NAc, CeA, or BNST. Distant Fos levels in ChR2 animals were compared to levels assessed in inactive eYFP control rats that underwent identical Fos induction procedures. See Fig. 4 and Supplemental Methods.

Regions
Orbitofrontal cortex (OFC)	Anterior lateral hypothalamus (aLH)
Infralimbic cortex (IF)	Posterior lateral hypothalamus (pLH)
Nucleus accumbens core (NAcC)	Paraventricular nucleus hypothalamus (PVN)
Anterior nucleus accumbens shell (aNAcSh)	Medial amygdala (MeA)
Posterior nucleus accumbens shell (pNAcSh)	Central amygdala (CeA)
Anterior bed nucleus of stria terminalis (aBNST)	Basolateral amygdala (BLA)
Posterior bed nucleus of stria terminalis (pBNST)	Ventral tegmentum (VTA)
Anterior ventral pallidum (aVP)	Substantia nigra (SN)
Posterior ventral pallidum (pVP)	Midbrain periaqueductal gray (PAG)