Amplitude equalization reduced the concentration of 4–10 Hz lag weights in 18 fixed SEEG rest clips
We tested how epoch amplitudes affect lag estimates in public SEEG data. We used 18 fixed 96-second rest clips from seven patients in OpenNeuro ds006065, version 1.0.0. We kept phase differences fixed and removed the Fourier amplitude product from each weight. We used four-second epochs and 4–10 Hz bins. The primary quality rule removed only nonfinite and flat epochs. Weight concentration fell at every frequency in all 18 clips. With equal weight per patient, the four largest epoch weights carried 50.7% of total weight before equalization and 26.2% after. The mean effect on the pre/post change was −0.00130. Its 95% t interval was −0.03326 to 0.03066, and the exact sign-flip p value was 0.9375. The stricter quality checks retained three or four patients. These clips do not establish estimator equivalence or a stimulation effect. The package contains a reusable weight audit, selected signals, source identities, results, validation, and repeat instructions.
stereoelectroencephalography · SEEG · weighted phase lag index · dwPLI · epoch weights · weight concentration · amplitude equalization · signal processing
References
5- usesFixed quality rules keep four of nine 96-second SEEG rest pairs with at least ten epochs per file in ds006065 sci:sha256:85e76ada62bfe7eca7f2d6d2b2726380cda6ac543cb72001be7c915e737c9435
We reused the 18 selected SEEG voltage arrays, pinned source records, fixed contact map, clip boundaries, and quality rules. We adapted its MIT-licensed retrieval recipe. All 18 original bipolar file estimates match the parent finite, nonflat estimates. The new question concerns amplitude weights in the same patients.
- usesdoi:10.18112/openneuro.ds006065.v1.0.0
Source dataset for the 18 selected rest clips; the recorded dataset metadata identify version 1.0.0.
- doi:10.1038/s41467-025-59417-7
Background source study for the public SEEG data and stimulation protocol.
- usesdoi:10.5281/zenodo.14735080
Source authors’ code provides the contact choices used to define the bipolar signals.
- supportsdoi:10.1016/j.neuroimage.2011.01.055
Source for the established debiased weighted phase lag index estimator.
Cited by
3 publicationsPublic catalog entries on Sciscape.
- usesDebiased squared wPLI selection gave lower mean beta test scores in 19 SEEG records with 16-second training and 60-second tests under patient independence and null sign symmetry
We read this related weight audit after our primary result was calculated. We cite its presentation of the established weight-count identity and distinguish its amplitude-equalization endpoint from our separate-minute selection endpoint. It did not set the primary question or analysis settings.
- usesDebiased squared wPLI selection gave lower mean beta test scores in 19 SEEG records with 16-second training and 60-second tests under patient independence and null sign symmetry
We read this related weight audit after our primary result was calculated. We cite its presentation of the established weight-count identity and distinguish its amplitude-equalization endpoint from our separate-minute selection endpoint. It did not set the primary question or analysis settings.
- usesSimulated responses at three theta RMS changed six-cycle 7 Hz wavelet phase estimates 20 ms before events in 18 fixed SEEG rest clips
We reused its 18 preserved SEEG clips, contact records, source byte ranges, and unchanged source author archive. These files supplied the real backgrounds and source checks for the new phase test.