Table 2. Fitting Concentration-Response Data Yielded EC₅₀, E_max and Hill Slope of WIN 55 212-2-Induced Depression of fEPSPs in NAc in Slices Obtained from Control, Sub-CUS, Control, and CUS Groups (n=6 for each group).

	Emax (%)	EC50 (μM)	Slope
Control (for sub-CUS)	51.52±3.50	0.27±0.04	1.66±0.22
Sub-CUS	48.57±3.40	0.26±0.08	1.79±0.39
Control (for CUS)	53.19±2.90	0.30±0.06	1.36±0.16
CUS	29.57±2.02***	0.29±0.06	1.21±0.10

^***p<0.001 CUS vs control or sub-CUS.