Skip to main content
. Author manuscript; available in PMC: 2018 Jan 17.
Published in final edited form as: Brain Struct Funct. 2008 May 17;213(1-2):215–227. doi: 10.1007/s00429-008-0182-4

Fig. 2.

Fig. 2

Active lever pressing during self-administration and relapse testing. a Mean number of active lever presses from the last 3 days of 2 h self-administration (SA) sessions for the 22 h abstinence group (experiment 1 left) and 15 day abstinence group (experiment 2 right) of cocaine and yoked-saline treated animals. b Mean number of active lever presses during the 1 h test session (test) of cocaine and yoked-saline treated animals after 22 h (left) and 15 days of abstinence (right). *P < 0.05, ***P < 0.001; cocaine versus saline