In Nic-60 d rats, 10 Hz stimulation of ILCx inputs evokes LTP that is CB1 receptor mediated. A, In vivo ILCx stimulation (1 min, 10 Hz) in anesthetized rats. CB1 antagonist AM251 (60 nl, 400 μm) or vehicle was infused into the BNST before stimulation. B, AM251 blocks electrically induced LTP in NIC-60 d rats (Veh, n = 5; AM251, n = 5). *p < 0.05. Data are mean ± SEM.