A six scaled MAD amplitude cap increased mean residual map agreement between file excerpts of 1–80 Hz filtered SEEG from 36 patients

This study used public SEEG data from OpenNeuro ds004100, version 1.1.3. It tested two 64 s file excerpts from each of 36 patients with epilepsy. The code formed bipolar signals from adjacent contacts after filtering from 1 to 80 Hz. The primary amplitude cap limited deviations from each block median to six scaled median absolute deviations. The analysis compared correlation magnitude maps after endpoint signal, shaft pair, and log distance controls. Mean agreement was 0.6597 without the cap and 0.6665 with the cap. The mean paired change was +0.0068, with a 95 percent patient bootstrap interval of [+0.0013, +0.0166]. The median change was +0.00054. One patient supplied 68.6 percent of the sum of changes. The second block alone did not establish an increase. These results apply to the short excerpts and fixed method. They do not establish clinical benefit. The package preserves 72 derived files, source versions, hashes, a raw example, code, results, and repeat instructions. An offline repeat produced nine identical result files.

stereoelectroencephalography · SEEG · amplitude cap · median absolute deviation · correlation maps · signal processing · epilepsy

Admitted 2026-11-09 19:42 UTC11 citing publications

References

usesBipolar 1–80 Hz SEEG correlation magnitude maps had positive correlations between file excerpts after signal, shaft pair, and log distance controls in 36 epilepsy patients sci:sha256:36170aff18fbecc7f57d9bf3c205be69a8ce1d45617c7e9600a74df38e629542
This study used the fixed cohort, layouts, metadata, source byte ranges, EDF reader, and spatial projection method. It retrieved the raw public bytes again. It reproduced the uncapped patient agreement to a maximum absolute error of 4.94e-13 before reporting new amplitude cap results.
usesAfter signal and shaft pair controls, 1–80 Hz bipolar SEEG correlation magnitude between shafts had negative fitted coordinate distance slopes in all 36 tested epilepsy patients sci:sha256:c00ccb31868a25e0564b56ac6efac067acd957bb3bfeb7e0e5f340e3618bbca7
This publication supplied the original covariance and projection input functions through the direct source study. The package preserves the imported functions and MIT notices.
usesThe within shaft high gamma agreement change interval included zero after a six scaled MAD mask in 33 SEEG patients under common average reference sci:sha256:984de81c89925ac4d31f705200f3fd067ee8a9115807eaca3fee37a5a918f0a5
Review of this publication summary helped define a separate amplitude sensitivity test. This study retains all time samples and tests map agreement. It does not use the prior gamma or clinical label scores.
usesA median cap changed mean beta phase-lag rank agreement by -0.022 between paired 60-second intervals in 35 SEEG patients sci:sha256:a5499e3191a69630824203781832cacbe2d3ded64c0a892ecef2857e242a89c4
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.
usesdoi:10.18112/openneuro.ds004100.v1.1.3
The analysis used HUP iEEG Epilepsy Dataset version 1.1.3; the saved source metadata and exact-version evidence identify this DOI and CC0 terms.
doi:10.1088/1741-2552%2Fac90ed

Cited by

11 publications

Public catalog entries on Sciscape.

usesIndependent contact rotations gave higher mean one-second beta power correlations between bipolar signals that share a contact than Gaussian models in 36 SEEG patients
Its EDF reader and contact layout code are the origin of the imported reader and layout files. We preserved the MIT notices and checked the raw fixture with an independent EDF reader.
usesTheta and high gamma amplitude correlation maps had positive mean agreement with voltage, shaft, and power controls in paired 56-second SEEG excerpts from 35 patients
Its EDF reader and contact layouts are the source of the imported code and layout files. We preserved its license notice. Its voltage correlation scores were not used.
usesUnscaled theta–gamma phase coefficients raised mean conditional relative squared error in paired SEEG excerpts of 56 seconds from 36 patients
Supplied the contact layouts, pinned source ranges, and EDF reader reused through the direct parent. This study does not use the correlation results or amplitude-cap results.
usesThe conditional interval for added high gamma energy concentration gain included zero in 16 SEEG test patients with power and contact order controls
Its EDF reader and contact layouts are the source of resources imported through the direct source package. We preserved the license notices and checked a raw example with an independent EDF reader.
usesUnscaled theta–gamma phase coefficients raised mean conditional relative squared error in paired SEEG excerpts of 56 seconds from 36 patients
Supplied the contact layouts, pinned source ranges, and EDF reader reused through the direct parent. This study does not use the correlation results or amplitude-cap results.
usesA 95% bootstrap interval included zero added theta-gamma transfer gain over weight 0.5 under independent patient resampling in 18 SEEG calibration patients and 18 test patients
This work supplied the pinned EDF range reader and contact layout method used by the inherited source extraction. Four source prefixes were retrieved again and rebuilt with this method.
usesIndependent contact rotations gave higher mean one-second beta power correlations between bipolar signals that share a contact than Gaussian models in 36 SEEG patients
Its EDF reader and contact layout code are the origin of the imported reader and layout files. We preserved the MIT notices and checked the raw fixture with an independent EDF reader.
usesA fixed alpha phase model has negative mean beta prediction skill in paired 56-second SEEG excerpts from 36 patients
This publication supplied the fixed contact layouts, source metadata, exact byte ranges, EDF parser, and one raw example. We retrieved all 72 raw prefixes again and calculated new alpha phase and beta voltage sums.
usesThe conditional interval for added high gamma energy concentration gain included zero in 16 SEEG test patients with power and contact order controls
Its EDF reader and contact layouts are the source of resources imported through the direct source package. We preserved the license notices and checked a raw example with an independent EDF reader.
usesBeta power maps had positive mean agreement after phase removal and site controls in paired 56-second SEEG excerpts from 35 patients
This study uses the source selection, contact layouts, metadata, pinned range locks, raw example, and EDF retrieval and calibration code. It retrieved the public voltages again and calculated new beta power maps. It does not reuse the earlier amplitude-cap scores.
usesMean theta–gamma phase regression depth was lower with a six scaled MAD excursion mask than with shifted masks in 72 short SEEG excerpts from 36 patients
This study uses its fixed SEEG contact layouts, source metadata, pinned EDF ranges, and EDF parser. New phase regression sums are calculated from fresh voltage downloads. Prior correlation scores are not reused.