Gamma decrease 10–30 seconds after seizure end gave mean within-shaft AUC 0.790 for SOZ marks in 29 ds004100 SEEG patients

We tested gamma power after two marked seizures in each of 32 patients from public SEEG dataset ds004100. SOZ means the clinical seizure onset zone. We used adjacent bipolar pairs with the same SOZ mark at both contacts. The main test compared pairs on the same shaft in 29 eligible patients. Gamma decrease 10–30 seconds after seizure end gave mean AUC 0.790. The 95% patient bootstrap interval was 0.721–0.856. The mean SOZ-to-other contrast in gamma change within shafts was -5.71 dB. The spatial score had mean Spearman correlation 0.469 across seizures after shaft means were removed. The baseline control gave mean AUC 0.555. The late window and signal quality test gave similar results. The paired AUC difference from onset gamma had an interval that included zero. These results apply to clinical marks in this selected cohort. They do not establish surgical benefit. The package includes source pins, new power data, code, independent checks, and offline instructions.

gamma power · postictal · SEEG · epilepsy · seizure onset zone · bipolar derivation · AUC · stereoelectroencephalography

Admitted 2026-11-09 19:50 UTC9 citing publications

References

usesA gamma pair selected in one seizure gave mean AUC 0.779 in a separate seizure compared with 0.807 for pooled SEEG in 32 patients sci:sha256:c1866489dffd313ed6905dca81bba1130ad55ca68cc771f84d14d38f4839867c
This study informed the fixed gamma band and onset comparator. The new analysis extracted all post-seizure measurements from the source.
usesChoice among 12 scores gave a mean AUC gain of 0.011 in separate seizures from 29 ds004100 SEEG patients sci:sha256:33e4e621d074278abcce1fbf1ef462f526bdf5f640d2b9f2f743e687d17d9398
This study supplied the fixed record list, metadata, EDF headers, and source version pins. EDF parsing and range checks adapt its code.
usesdoi:10.18112/openneuro.ds004100.v1.1.3
The analysis uses the clinical marks and SEEG records in OpenNeuro ds004100 version 1.1.3.
doi:10.3389/fneur.2026.1862336

Cited by

9 publications

Public catalog entries on Sciscape.

usesA fixed gamma model gave mean within-shaft AUC 0.818 for SOZ marks in 14 SEEG patients excluded from fitting
We used its 64 gamma power files, raw fixture, source pins, clinical metadata, and extraction code. Its aggregate result informed the question.
usesOnset gamma rise and post-seizure gamma fall had mean cross-seizure rank correlation -0.033 within shaft and label groups in 29 SEEG patients
The reused five-period feature extraction and public range reader began in this contribution. The source gamma measure, adjacent contact pair rule, raw fixture, and extraction code are credited to this work.
usesThe mean decrease in the ratio of gamma power to 1–30 Hz power was larger at SOZ pairs within shafts in 29 ds004100 SEEG patients at 10–30 seconds after seizure end
This study uses the fixed 32-patient cohort, source pins, clinical metadata, EDF helper, and gamma arrays from the parent study. New low frequency power is extracted from the same raw ranges. The parent gamma arrays and hashes support validation. The cohort is reused.
usesThe gamma difference from onset to 10–30 seconds after seizure end gave mean within-shaft SOZ AUC 0.833 versus 0.747 for onset increase in 29 SEEG patients
This work uses its 64 gamma feature files, fixed cohort, clinical metadata, pinned public EDF ranges, and extraction code. All records were retrieved again. The new test compares a fixed onset to post-seizure score with onset increase and post-seizure decrease. New retrieval reproduced all 640 feature arrays and 320 signal range hashes. The post-seizure comparator reproduced mean within-shaft AUC 0.790175 in the same 29 patients.
usesAveraging gamma power before the logarithm reversed a mean 7.0 percent of SOZ comparisons within shafts 10–30 seconds after seizure end in 29 SEEG patients
This work supplied the 64 compact gamma power files, source pins, clinical metadata, raw fixture, and extraction code. We used these inputs to compare arithmetic and geometric power averages. Its report informed the question before the local plan.
usesThe patient bootstrap interval included zero added SOZ rank gain from post-seizure gamma in 29 ds004100 SEEG patients under independent, exchangeable patient sampling
We used its fixed patient selection, compact gamma powers, public source pins, and extraction code. These files allowed a new test of added rank information after onset gamma and contact number controls.
usesThe 95% patient interval included zero AUC gain from added post-seizure gamma rank weights of 0% to 50% in separate seizures from 29 SEEG patients under independent, exchangeable patient sampling
This publication supplied all 64 power files, source marks, headers, fixed object versions, range hashes, extraction code, and a raw signal period. We preserved all 495 files unchanged and used its fixed support for the new rank test.
usesGamma recovery did not improve mean SOZ rank loss in 29 ds004100 SEEG patients under a fixed linear model
This publication supplied the power data, fixed patient selection, source pins, metadata, and extraction code.
usesAfter shaft and baseline control, the 95% interval for mean gamma change correlation included zero in 32 ds004100 SEEG patients. Patient sampling assumed independence and exchangeability.
This publication supplied all 64 gamma power files, clinical metadata, object version pins, headers, and the extraction code. We used these files for a new fixed analysis of changes between two seizures, and rebuilt every feature file from the public source.