Table 2.

Vigilance and subjective sleepiness.

	Intention completed		Intention reinstated		Intention active throughout
	Sleep	Wake	Sleep	Wake	Sleep	Wake
Vigilance performance
Reaction time
Learning	348 ± 12	345 ± 10	412 ± 13	418 ± 11	420 ± 12	426 ± 9
Test 1	359 ± 13	355 ± 11	421 ± 14	446 ± 13	419 ± 12	434 ± 8
Test 2	337 ± 11	331 ± 10	406 ± 10	424 ± 11	405 ± 12	426 ± 7
Error rate
Learning	4.41 ± 0.73	4.62 ± 0.84	3.5 ± 0.64	3.93 ± 0.63	1.83 ± 0.45	2.03 ± 0.57
Test 1	3.82 ± 0.94	4.42 ± 0.58	3.5 ± 0.64	3.57 ± 0.97	2.50 ± 0.65	2.34 ± 0.66
Test 2	5.00 ± 0.91	3.46 ± 0.67	3.17 ± 0.57	3.04 ± 0.54	2.33 ± 0.86	2.50 ± 0.82
Subjective Sleepiness
Learning	2.33 ± 0.20	2.00 ± 0.20	2.93 ± 0.23	2.21 ± 0.30	2.53 ± 0.26	2.47 ± 0.15
Test 1	3.56 ± 0.25	2.87 ± 0.26	3.93 ± 0.25	5.50 ± 1.50	4.07 ± 0.25	3.29 ± 0.22
Test 2	2.11 ± 0.21	2.07 ± 0.18	2.27 ± 0.21	2.86 ± 0.29	1.93 ± 0.12	3.00 ± 0.27

Vigilance performance (reaction times in ms and error rates in % of all trials) and subjective sleepiness (Stanford Sleepiness Scale) during learning, test 1 and test 2. There were no significant differences between respective groups in both experiments. Means ± SEM are shown.