Figure 4.

Effects of 1 and 15 days of ketamine exposure (10 mg/kg; once daily) on anxiety‐like behavior. The results were group means + standard deviations, “CUS + Ketamine (N = 8),” “CUS + Vehicle (N = 10),”and “Control (N = 8).” (a, c) Rats short‐term effects of repeated ketamine exposure on anxiety‐like behavior. (b, d) Rats long‐term effects of repeated ketamine exposure on anxiety‐like behavior. *p < .05 were expressed between CUS + Vehicle and CUS + Vehicle group statistically significant. ^# p < .05 were expressed between Control and CUS + Vehicle group statistically significant