A median cap changed mean beta phase-lag rank agreement by -0.022 between paired 60-second intervals in 35 SEEG patients
We tested a median weight cap on beta phase-lag scores in 35 patients with public SEEG. Each patient had two 60-second intervals from OpenNeuro ds004100 version 1.1.3. We used thirty separate two-second windows and one fixed bipolar signal per shaft. Mean rank agreement across files was 0.0346 without the cap and 0.0128 with the cap. The paired mean change was -0.0218. The 95% patient bootstrap interval was [-0.0539, 0.0089]. The primary two-sided sign-flip test gave p = 0.19398. This test assumes independent patients and a symmetric null distribution of patient changes. The cap made the weights more even. It did not establish better map agreement. A proof gives zero expected capped score under independent fair signs conditional on magnitudes. A mathematical example shows that a zero mean cross-spectrum alone does not preserve this null. The package preserves native source recipes, Fourier inputs, patient results, code, and exact offline repeat checks. These results do not show true neural connections or clinical benefit.
stereo-EEG · phase-lag index · weighted phase lag index · rank agreement · robust statistics · reproducibility · epilepsy
References
7- usesBeta 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 sci:sha256:f3f543847374cdeea0159c55b35d331f508ba3cb7321782dd8aab64bb7ed605d
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.
- usesMean residual beta power map similarity was positive across two 64-second SEEG windows in 35 patients sci:sha256:2841d305649b6495175cd6f15283533efca51ec7b99d45132e192a1b382b3983
We used the fixed shaft contact selection, pinned native EDF range recipe, BIDS metadata, and retrieval and audit code. We read native samples again and calculated new window Fourier values and phase-lag scores.
- usesOne second beta power averaging retained shared contact correlation in independent stationary proper complex Gaussian models fitted to 36 SEEG patients sci:sha256:588f4ae1d7299099a824e145e72910deeef2a5162a2f91e6e764e00284846b98
The retained contact labels, adjacent pair indices, and EDF indices came from this publication through the shaft selection parent. We did not use its spectral values in the new scores.
- uses80 percent overlap of 4 second Hann windows raised 4 to 8 Hz dwPLI2 in independent phase controls from 18 public SEEG excerpts sci:sha256:7f401f6d1b5c6d78f7bc6408fdd3578e061a00418f147641507278c04fbeb846
Its window-overlap result informed the separate-window design and the stated limit on claims of independent signs.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
This exact OpenNeuro version supplied the SEEG recordings and metadata used in the analysis.
- doi:10.1016/j.neuroimage.2011.01.055
- doi:10.1007/s11571-020-09646-x
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesA 10-second window pair rule changed mean beta phase lag rank agreement by -0.001 in 35 SEEG patients
The study reused its fixed contact selection, 72 native Fourier arrays, public metadata, and retrieval code. All Fourier inputs were rebuilt from fresh pinned public ranges.
- usesA six scaled MAD amplitude cap increased mean residual map agreement between file excerpts of 1–80 Hz filtered SEEG from 36 patients
Review of this beta phase-lag cap study helped define a separate question about voltage amplitude and between-file agreement. Its capped cross-spectrum results were not used as numeric inputs.