Table 2.

Nosepokes into inactive ports during progressive ratio (PR) testing on food restriction.

	Saline			CNO 0.5 mg/kg
	N	Pokes	σ	N	Pokes	σ
FR5	16	2	1.51	16	2.88	4.94
FR10	16	1.56	1.63	16	2.63	2.78
FR20	16	3.69	4.32	16	5.13	5.02
FR30	16	5.06	4.57	15	6	5.82
FR50	15	11.8	7.41	15	9.6	6.88
FR70	14	14.5	10.1	15	12.33	6.53
FR100	12	23.08	20.5	15	26.87	32.8
FR130	8	17.38	11.7	13	28.46	29
FR170	5	28.6	20	8	34.88	22.3
FR210	2	15.5	20.5	5	22.6	5.32
FR260	2	19	22.6	3	21.67	13.3
FR310	1	13	N/A	1	7	N/A