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Individual subject sleep parameters on baseline (B) and in the nights after afternoon (16h) treatments with vehicle (Veh) or (A, sleep efficiency; B, sleep latency; C, wake time after sleep onset – WASO) racemic MDMA (0.3, 1.0 and 1.7 mg/kg, i.m.) or (D, sleep efficiency; E, sleep latency; F, WASO) R(−) MDMA (0.3, 1.0 and 1.7 mg/kg, i.m.) (N = 6).
