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. 2013 Jul 10;38(12):2427–2438. doi: 10.1038/npp.2013.143

Figure 2.

Figure 2

Selected ratings of subjective effects. The upper panels display the mean peak±1 SEM rating of ‘I liked the choice' (mm) before (BL) and after each dose administration. Data points above NTX represent effects after administration of NTX and before administration of the placebo stimulant dose. The middle panels display the mean±1 SEM peak rating of ‘I feel high' (mm), and the lower panels display the mean±1 SEM peak rating of ‘I would pay' ($). Data points connected by black lines represent sessions involving active COC or AMPH doses in combination with NTX (0, 12.5, and 50 mg) and data points connected by grey lines represent sessions involving placebo COC or AMPH doses in combination with NTX (0 and 50 mg).