Skip to main content
. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: Pharmacol Biochem Behav. 2015 Jan 31;131:51–56. doi: 10.1016/j.pbb.2015.01.019

Figure 1.

Figure 1

Graphical depiction of the experimental timeline and summary of procedures Abbreviations: postnatal day (P), fixed ratio schedule of reinforcement (FR), progressive ratio schedule of reinforcement (PR).