Table 6. Experiment 2: comparisons of relative spectral delta.

Results of paired-samples t-tests for relative spectral delta.

Region	Groups
	Normal sleep (NS)		Sleep restriction (SR)
	M	SD	M	SD	N	df	t	Sig.	d	99% CI
Left frontal	2.19	0.16	1.32	0.17	21	20	−1.13	0.273	−0.25	[0.00–0.82]
Left central	1.96	0.16	1.87	0.13	21	20	−1.54	0.140	−0.34	[0.00–0.92]
Left occipital	1.20	0.14	1.25	0.15	21	20	−0.53	0.602	−0.12	[0.00–0.68]
Right frontal	2.27	0.17	2.44	0.16	21	20	−1.46	0.161	−0.32	[0.00–0.90]
Right central	1.53	0.12	1.80	0.15	21	20	−3.28	0.004*	−0.72	[0.01–1.36]
Right occipital	1.09	0.13	1.20	0.14	21	20	−1.47	0.158	−0.32	[0.00–0.90]

Note:

^*p < 0.008 indicates a significant difference. Confidence intervals were created using the Bonferroni corrected alpha level (0.008).