Table 3.

Sample means ± SEMs for functional connectivity, network topology, and distance metrics

	RS 1	RS 2	RS 3	RS 4
Functional connectivitya
Placebo	0.1257 ± 0.0141	0.1262 ± 0.0151	0.1365 ± 0.0163	0.1566 ± 0.0202
Nicotine	0.1128 ± 0.0121	0.1155 ± 0.0213	0.1203 ± 0.0172	0.1153 ± 0.0159
Functional network topology and distance
Global efficiency
Placebo	0.5512 ± 0.0006	0.5495 ± 0.0009	0.5487 ± 0.0010	0.5482 ± 0.0012
Nicotine	0.5515 ± 0.0007	0.5504 ± 0.0012	0.5507 ± 0.0007	0.5500 ± 0.0009
Clustering
Placebo	0.5636 ± 0.0078	0.5724 ± 0.0087	0.5799 ± 0.0089	0.5875 ± 0.0117
Nicotine	0.5554 ± 0.0080	0.5583 ± 0.0124	0.5634 ± 0.0091	0.5646 ± 0.0102
Distance
Placebo	68.07 ± 0.51	67.30 ± 0.74	66.47 ± 0.78	66.29 ± 0.6
Nicotine	68.72 ± 0.42	67.66 ± 0.99	67.49 ± 0.56	67.12 ± 0.86

RS, Resting-state period.

^a Wavelet scale 2; 0.08–0.17 Hz.