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. 2017 Apr 5;12(4):e0174272. doi: 10.1371/journal.pone.0174272

Fig 2. Locomotor activity in successful or failed acquisition of morphine SA.

Fig 2

(a) The locomotor activity in the successful acquisition group was higher than in the failed acquisition group. (b) The morphine infusions in the successful acquisition group were higher than failed acquisition group. (c) The active pokes in the successful acquisition group were higher than failed acquisition group. (d) The inactive pokes had no significant difference between the successful acquisition group and failed acquisition group. ### p < 0.001, compared to failed acquisition group. * p < 0.05, ** p < 0.01,*** p < 0.001, post hoc test compared to failed acquisition group on the same session. Successful acquisition group, n = 35; failed acquisition group, n = 12.