Skip to main content
. Author manuscript; available in PMC: 2010 Jan 1.
Published in final edited form as: Nebr Symp Motiv. 2009;55:91–109. doi: 10.1007/978-0-387-78748-0_6

Figure 6.2.

Figure 6.2

Effects of response-contingent, yoked, or continuous nicotine or responding for VS. Acquisition data (days1-20) were followed by 6 days in which saline was substituted for nicotine (days 21-26) and then three days in which nicotine was replaced (days 27-29). Results are mean + SEM of data obtained from 7-9 animals per group (From Donny et al. 2003. Copyright © 2003 by Springer-Verlag. Reprinted with permission)