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. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: Behav Brain Res. 2013 Nov 14;259:164–173. doi: 10.1016/j.bbr.2013.11.009

Figure 1.

Figure 1

Experimental schedule. Downward facing arrowheads indicate the variety of behavioral testing. Black represents a fixed ITI training session, blue represents a variable ITI test session, and yellow represents locomotor activity testing. Upward facing arrowheads represent drug treatment. Upper row of black arrowheads represent nicotine (0.2 mg/kg, s.c.) or saline, given 20 minutes prior to testing. Lower row of arrowheads represents PCP (3 mg/kg, i.p.; red) or saline (grey) administered 30 minutes prior to testing.