Table 2: The main integration and spectral features in three discrete time points. The table shows the indices for both sleep states (QS = quiet sleep, NQS = nonquiet sleep) and they were computed on the transfer entropy connectivity graph. The results are reported as median (IQR), where IQR stands for InterQuartile Range. The symbol stands for the Pearson correlation coefficient, while represents a significant correlation with . The values or mean the reported results are multiplied by a factor or .

Network indices: transfer entropy in three age groups
Median (IQR), PMA weeks ≤31≥37 (%)

Clustering coefficient
 QS.025 (.008).021 (.005).017 (.002)
 NQS.025 (.006).020 (.006).018 (.002)
Path length
 QS3.73 (.30)3.89 (.22)4.07 (.10)
 NQS3.71 (.20)3.91 (.25)4.04 (.14)
Spectral radius
 QS.18 (.07).16 (.05).12 (.01)
 NQS.18 (.05).15 (.04).13 (.02)
Spectral gap
 QS.15 (.09).12 (.04).10 (.02)
 NQS.15 (.06).12 (.04).11 (.02)

Network indices: transfer entropy, CCA
Median (IQR)≤31≥37 (%)

Clustering coefficient
 QS ()9.82 (6.1)6.21 (3.3)4.98 (0.9)
 NQS ()9.13 (3.5)6.29 (2.0)5.90 (1.0)
Path length
 QS4.70 (.57)5.11 (.47)5.32 (.18)
 NQS4.73 (.40)5.09 (.27)5.16 (.18)
Spectral radius
 QS ()8.20 (4.7)4.68 (3.1)3.63 (.6)
 NQS ()6.94 (2.8)4.74 (1.6)4.30 (.7)
Spectral gap
 QS ()5.84 (3.1)3.93 (2.0)3.30 (.6)
 NQS ()5.84 (3.1)3.93 (2.0)3.30 (.6)