Schematic illustrating key structures and pathways of the reward circuit. Red arrow=input from the vmPFC; dark orange arrow=input from the OFC; light orange arrow=input from the dACC; yellow arrow=input form the dPFC; brown arrows other main connections of the reward circuit. Amy=amygdala; dACC=dorsal anterior cingulate cortex; dPFC=dorsal prefrontal cortex; Hipp=hippocampus; LHb=lateral habenula; hypo=hypothalamus; OFC=orbital frontal cortex; PPT=pedunculopontine nucleus; S=shell, SNc=substantia nigra, pars compacta; STN=subthalamic nucleus.; Thal=thalamus; VP=ventral pallidum; VTA=ventral tegmental area; vmPFC=ventral medial prefrontal cortex