Table 2.
Sample characteristics, periodic and aperiodic activity by BI status.
|
BI |
BN |
95% CI | |||
|---|---|---|---|---|---|
| N | Mean (SD) | N | Mean (SD) | ||
| Age (years) | 30 | 10.00 (0.95) | 30 | 9.93 (0.98) | [−0.43, 0.57] |
| Female | 47% | 63% | |||
| BIQ | 30 | 30 | |||
| Total | 128.00 (20.49) | 78.22 (19.92) | [39.34, 60.23] | ||
| Social Novelty | 70.23 (10.28) | 38.78 (11.32) | [25.86, 37.04] | ||
| Aperiodic | 30 | 30 | |||
| Offset | 1.62 (0.28) | 1.54 (0.24) | [−0.06, 0.21] | ||
| Exponent | 1.69 (0.22) | 1.67 (0.18) | [−0.09, 0.12] | ||
| Periodic | |||||
| Theta (4–8 Hz) | 9 | 16 | |||
| Center frequency | 6.65 (0.89) | 7.06 (0.46) | |||
| Power | 0.21 (0.06) | 0.37 (0.13) | |||
| Band width | 1.28 (0.31) | 1.49 (0.35) | |||
| Alpha (8–13 Hz) | 29 | 30 | |||
| Center frequency | 10.03 (0.80) | 9.50 (0.51) | [0.18, 0.88] | ||
| Power | 1.19 (0.27) | 0.98 (0.30) | [0.06, 0.36] | ||
| Band width | 2.04 (1.01) | 1.91 (0.54) | [−0.29, 0.55] | ||
| Beta (13–30 Hz) | 28 | 27 | |||
| Center frequency | 18.09 (2.72) | 17.43 (2.09) | [−0.65, 1.98] | ||
| Power | 0.33 (0.16) | 0.26 (0.11) | [−0.01, 0.14] | ||
| Band width | 4.71 (2.10) | 3.99 (1.89) | [−0.36, 1.80] | ||
| Model fitting | |||||
| R^2 | 0.99 (0.01) | 0.99 (< 0.01) | [< −0.01, < 0.01] | ||
| MAE | 0.04 (0.02) | 0.03 (0.01) | [< 0.01, 0.01] | ||
Note: Periodic activity group comparisons were limited to alpha and beta due to a small number of children exhibiting activity in the theta band after accounting for the aperiodic signal. BI = behaviorally inhibited. BN = non-behaviorally inhibited. BIQ = Behavioral Inhibition Questionnaire. Participants were categorized as BI if BIQ total score was 119 and/or social novelty score 60. R^2 = variance explained in specparam model fit. MAE = mean absolute error in specparam model fit.