Keywords: سلول های تقویت شده; CeL; amygdala, centrolateral nucleus; CeM; amygdala, centromedial nucleus; CR; conditioned response; CS; conditioned stimulus; DMPAG; dorsomedial periaqueductal gray; FDG; fluorodeoxyglucose; HBa; anterior habenula; HBl; posterior habenula, lateral; HBm;