Table 4.

Day 7 Psychomotor vigilance test results (M ± SD)

Variable	500 mg A-GPC	250 mg A-GPC	200 mg Caffeine	Placebo
Mean RT (sec)	0.330 ± 0.059	0.359 ± 0.106	0.315 ± 0.070	0.326 ± 0.070
Max RT (sec)	2.376 ± 3.235	1.351 ± 1.716	2.149 ± 3.914	1.982 ± 3.150
Minor lapes (count)	2.916 ± 1.621	5.000 ± 1.507	2.636 ± 2.292	3.833 ± 5.937