Table 1.

Mean (± SEM) number of responses for all six FR20 and FI-240 sec experiments

FR20
		Veh	5.0 mg/kg	10.0 mg/kg	20.0 mg/kg	40.0 mg/kg
Caffeine	Mean	3181.3	3259.6	2630.3	2156.5	1493.8
	SEM	249.9	204.6	162.5	181.5	267.4
		Veh	5.0 mg/kg	10.0 mg/kg	20.0 mg/kg	40.0 mg/kg
Theophylline	Mean	2867.4	3114.6	3070.6	2540.5	1416.5
	SEM	131.2	186.4	234.0	250.8	159.1
		Veh	1.0 mg/kg	2.0 mg/kg	4.0 mg/kg	8.0 mg/kg
MSX-3	Mean	3363.88	3271.88	3319.75	3458.38	3384.50
	SEM	182.91	128.79	90.61	114.12	97.65
		Veh	0.125 mg/kg	0.25 mg/kg	0.5 mg/kg	1.0 mg/kg
Istradefylline	Mean	3652.6	3832.0	4197.1	3921.4	3766.4
	SEM	331.6	317.2	271.8	247.3	264.2
		Veh	0.1875 mg/kg	0.375 mg/kg	0.75 mg/kg	1.5 mg/kg
DPCPX	Mean	3263.0	3154.0	3144.5	2687.9	2724.6
	SEM	161.3	180.7	217.2	352.7	103.9
		Veh	1.5 mg/kg	3.0 mg/kg	6.0 mg/kg	12.0 mg/kg
CPT	Mean	4268.0	4404.7	3908.3	4470.3	4366.7
	SEM	333.5	244.9	264.6	205.6	281.9
FI-240 sec
		Veh	5.0 mg/kg	10.0 mg/kg	20.0 mg/kg	40.0 mg/kg
Caffeine	Mean	120.6	190.9	207.6	225.1	103.6
	SEM	17.8	22.8	21.8	17.7	13.9
		Veh	5.0 mg/kg	10.0 mg/kg	20.0 mg/kg	40.0 mg/kg
Theophylline	Mean	97.9	130.9	179.1	186.3	179.4
	SEM	12.8	10.0	17.7	20.7	28.5
		Veh	1.0 mg/kg	2.0 mg/kg	4.0 mg/kg	8.0 mg/kg
MSX-3	Mean	82.4	93.3	162.3	129.9	69.1
	SEM	15.4	21.3	26.2	18.4	11.2
		Veh	0.125 mg/kg	0.25 mg/kg	0.5 mg/kg	1.0 mg/kg
Istradefylline	Mean	80.1	101.4	134.8	150.6	113.5
	SEM	13.4	17.5	26.6	28.4	14.4
		Veh	0.1875 mg/kg	0.375 mg/kg	0.75 mg/kg	1.5 mg/kg
DPCPX	Mean	127.3	97.3	120.3	101.9	95.9
	SEM	34.1	24.2	25.7	23.5	18.6
		Veh	1.5 mg/kg	3.0 mg/kg	6.0 mg/kg	12.0 mg/kg
CPT	Mean	82.4	63.1	83.4	69.3	95.6
	SEM	16.9	16.1	14.5	12.4	11.3