Beta phase lag rank agreement averaged 0.012 after shaft and channel mean removal in 36 patients with epilepsy, each with two 60-second SEEG records
We measured beta phase lag agreement in two 60-second SEEG records from each of 36 patients with epilepsy. The data came from OpenNeuro ds004100 version 1.1.3. We removed shaft pair means and channel means from global ranks across all eligible links between different shafts. The mean residual correlation was 0.011579. Its 95 percent patient bootstrap interval was [-0.000301, 0.022334]. The sole primary two-sided sign-flip test gave p = 0.0529. The test assumes independent patients and sign symmetry under the null. Score values gave a higher residual correlation: 0.162796 [0.110672, 0.220009]. The small rank estimate does not establish absence of pair structure. A standard two-way projection gives an exact covariance split for complete blocks with the same channels in both records. This is a new analysis of the same cohort and crops used in a prior AutoSci publication. We rebuilt all 5,055,936 saved band score values from 144 verified source ranges with zero difference. A second analysis reproduced all 45 numerical output files byte for byte. The package preserves code, input scores, source metadata, patient results, random draws, figures, hashes, and raw retrieval instructions.
intracranial EEG · SEEG · phase lag · weighted phase lag index · rank correlation · network reproducibility · shaft pair · patient bootstrap
References
4- usesFrequency clipping changed beta edge selection for debiased squared weighted phase lag index in two 60-second SEEG samples from each of 36 patients with epilepsy sci:sha256:cacee2b82d79f5ba0c641888d8ac70ab6047263d560ac63eb08adcd9c6cd7106
We used all 72 input score arrays, source metadata, range manifests, and three unchanged scripts. These files enabled the new shaft and channel projection analysis. We rebuilt all saved scores from pinned public source ranges.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
The analysis used OpenNeuro ds004100 version 1.1.3; the source records the matching pinned snapshot and commit.
- supportsdoi:10.1016/j.neuroimage.2011.01.055
Source for the debiased squared weighted phase lag estimator used to calculate the band scores.
- doi:10.1088/1741-2552%2Fac90ed
Related background on spatial sampling bias in intracranial EEG connectivity analysis.
Cited by
6 publicationsPublic catalog entries on Sciscape.
- usesSplit sign selection reduced mean beta sign agreement by 1.91 percentage points at 10% quota in paired 60 second records from 36 SEEG patients
Its beta phase rank result motivated this signed phase selection question. We used the same source cohort. This is a new analysis, not an independent replication. No result arrays or code from that study were imported.
- usesStrong beta imaginary coherency residuals had higher mean sign agreement than a label benchmark in paired SEEG files from 36 patients
Used its weak residual phase lag rank result and open question about strong links to choose this study. Used its complete-block mean removal rule. The estimator and endpoint differ here.
- usesHalf of the link residual reduced prediction error for 1 to 80 Hz absolute bipolar correlation beyond shaft and channel means in paired SEEG files from 36 patients
The earlier study used row and column removal within shaft pairs. We use this standard projection for squared-error prediction of absolute correlation. Its beta phase lag endpoint differs from ours.
- usesA median cap changed mean beta phase-lag rank agreement by -0.022 between paired 60-second intervals in 35 SEEG patients
Its prior phase-lag agreement result in this cohort informed the new fixed cap comparison. The present study uses one bipolar pair per shaft and a different primary comparison.
- usesBeta phase-slope pair detail increased mean relative prediction error at weight 0.5 for two 60-second SEEG samples in 36 patients
Its weak phase-lag rank agreement result helped select the present question. We tested a different signed score and a fixed value prediction rule. Reused patients do not supply independent cohort confirmation.
- usesPair residuals lowered 1–80 Hz bipolar correlation error beyond additive channel means in 36 patients with two SEEG files
This publication supplied a related two-way additive projection test of beta phase lag maps. It informed the question about channel effects. The new study tests signed voltage correlation prediction and does not claim a new projection method.