. Author manuscript; available in PMC: 2008 Oct 1.

Published in final edited form as: Pharmacol Biochem Behav. 2007 Jun 21;87(4):462–471. doi: 10.1016/j.pbb.2007.06.002

Table 2.

Summary of Initial Apparatus Bias by Chamber Color

	n	WHITE	GREY	BLACK
COC40	29	340 ± 13 sec. (158-475)	219 ± 11 (131-388)	343 ± 9 (215-427)
COC20	30	339 ± 7 (276-414)	217 ± 8 (149-339)	345 ± 8 (246-472)
SPF40	28	360 ± 14 (211-492)	204 ± 9 (107-288)	336 ± 13 (202-437)
SAL	34	363 ± 12 (229-482)	203 ± 7 (108-282)	336 ± 10 (188-417)

Values are means ± S.E.M.; values in parentheses represent the range of times spent in each chamber in the pre-conditioning test. Total pre-conditioning test session = 900 sec.