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. Author manuscript; available in PMC: 2013 Apr 21.
Published in final edited form as: Behav Brain Res. 2012 Feb 7;230(1):92–99. doi: 10.1016/j.bbr.2012.01.052

Fig. 4.

Fig. 4

The effect of 5 mg/kg of cocaine on locomotor activity in male adolescent rats (PND 44-46) habituated to the test chamber after housing in different social/environmental conditions. Rats were housed (A) one/cage (II vs IE); (B) two/cage (SI2 vs SE2); and (C) three/cage (SI3 vs SE3). Data are presented as mean ± SEM total distance traveled during a 60 min session after habituation as a percent of baseline distance traveled on PND 43. *significant difference vs impoverished rats over 3 days of testing (p<0.05).