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. Author manuscript; available in PMC: 2009 Jan 28.

Published in final edited form as: Physiol Behav. 2007 Sep 26;93(1-2):337–350. doi: 10.1016/j.physbeh.2007.09.013

Table 1.

Schedule of study activities

		Unpaired Group Injections		Paired Group Injections

Study Phase	No.of Days	11:00	19:00	11:00	19:00	Stimulus Presented
Acclimation	6	-	-	-	-	-
Acclimation Injections	8	Saline	Saline	Saline	Saline	-

Nicotine Phase 1	14	Nicotine	Saline	Saline	Nicotine	19:05-19:25
Test 1: Circadian Effects	3	-	-	-	-	-

Nicotine Phase 2	7	Nicotine	Saline	Saline	Nicotine	19:05-19:25
Test 2: Stimulus Effects
Normal Time	2	-	-	-	-	19:05-19:25
Novel Time	2	-	-	-	-	11:05-11:25

Nicotine Phase 3	7	Nicotine	Saline	Saline	Nicotine	19:05-19:25
Test 3: Probe Test
Novel Time	1	Saline	Nicotine	Nicotine	Saline	-
Circadian Effects	1	-	-	-	-	-
Normal Time	1	Nicotine	Saline	Saline	Nicotine	-
Circadian Effects	1	-	-	-	-	-

Final Baseline	4	-	-	-	-	-