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. Author manuscript; available in PMC: 2019 Feb 15.
Published in final edited form as: Behav Brain Res. 2017 Oct 14;338:40–46. doi: 10.1016/j.bbr.2017.10.013

Figure 1.

Figure 1

The effects of saline vs. MK-801, a NMDA antagonist, on 2-CS PCA acquisition. Mean (±SEM) response rate (responses/second; r/s) for saline pretreatments and MK-801 (0.1 mg/kg) pretreatments on (A) sign-tracking, (B) goal-tracking and (C) goal-tracking during an 8s pre-CS period. (D) Mean (±SEM) percent CS responding for CS-dependent goal-tracking relative to responding during an 8s pre-CS period for the last day of 2-CS PCA acquisition. Note: the line at 50% represents the point where the proportion of CS-dependent goal-tracking responses are equivalent to the number of goal-tracking responses emitted during an 8s pre-CS period.