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. 2016 Jun 22;12(3):255–262. doi: 10.1007/s13181-016-0557-5

Fig. 4.

Fig. 4

Lognormal (top panels) and gamma distribution function (bottom panels) obtained from the average values (mu) of all subjects of X, Y, and Z axes of locomotion data during pre (black line) and post (dotted line) opioid administration