Short general anesthesia modulates formalin induced PERK expression in the rACC. a Typical PERK expression in area Cg1 of the rACC at Bregma 2.7 mm for each treatment group. Scale bar 50 µm. b Quantification of PERK expression across rACC Bregma points using bins. *P < 0.05, **P < 0.01, data presented as mean ± SEM (n = 3 each group).