Table 2.
Experiment-wide Enrichment Results for Salience-Visual Functional Connectivity
| All Subjects | Excluding n = 8 sleeping subjects | |||||
|---|---|---|---|---|---|---|
| ORA | Max-Mean | GSEA | ORA | Max-Mean | GSEA | |
| SA | 27.9% | 1.30 | 0.57 | 26.6% | 1.29 | 0.56 |
| p-value | 0.00016* | 0.00051* | 0.00056* | 0.00022* | 0.00058* | 0.000840 |
| RRB | 25.0% | 1.33 | 0.56 | 20.0% | 1.26 | 0.53 |
| p-value | 0.00022* | 0.00037* | 0.00072 | 0.0015 | 0.000947 | 0.002520 |
| SA, RRB jointly | 27.2% | N/A | 0.65 | 27.2% | N/A | 0.63 |
| p-value | 0.00001* | 0.00020* | 0.0001* | 0.000360* | ||
Observed values for the ORA (5% threshold), max-mean and GSEA enrichment statistics with p-values in italics: raw permutation p-value are presented, those which meet our p ~ 0.0005 threshold for significance are marked with an asterisk (*). Results are given for the entire sample and excluding sleeping subjects (n = 8). The p-values were determined using independent permutation runs: 25 K permutations for the more compute-intensive GSEA, and 250 K for ORA and max-mean each. Two-sided t-statistics were used to screen for association with SA or RRB individually. Partial F tests were used to screening for association with SA and RRB jointly (d.f. = 2, 85 for the complete sample and d.f. = 2, 77 when excluding sleeping subjects). The expectation for ORA is 5% under the null. Max-Mean is a directional test and cannot be used with F screening statistics. The median max-mean value under the null hypothesis of no enrichment is ~ 0.54 with 0.1% and 99.9% quantile estimates of 0.31 and 1.25 (obtained in separate analyses). The median GSA value under the null is ~ 0.21 (with 0.1% and 99.9% quantiles: 0.17 and 0.60) for the F test and ~ 0.20 (0.18–0.54) for t-tests (separate analysis as well)