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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Psychopharmacology (Berl). 2014 May 29;232(1):63–73. doi: 10.1007/s00213-014-3637-8

Figure 4.

Figure 4

Peak visual analog scale ratings of “high (drug ‘high’) (top frame),” “lightheaded” (middle frame), and “skin itchy” (bottom frame) in the five drug conditions: 0MTNX/0MS; .45MTNX/0MS; 0MTNX/.14MS; .225MTNX/.14MS; and .45MTNX/.14MS. Labels at the far ends of the 100-mm visual analog scales were “not at all” (0) and “extremely” (100). Brackets represent SE. Asterisks indicate a significant difference from the 0MTNX/.14MS condition; the pound sign indicates a trend towards a significance difference (p<0.10) from the 0MTNX/.14 MS condition. For each of the subjective effects, ratings from the three conditions in which morphine was administered differed significantly from the 0MTNX/0MS and.45MTNX/0MS conditions.