With a common average reference, early gamma change ranks agreed more between interleaved estimates than across two seizures in 31 SEEG patients
We tested early seizure gamma change ranks in public SEEG from OpenNeuro ds004100 version 1.1.3. The sample had 31 patients, 62 seizures, and 3,674 matched contacts. The score was the gamma power change from a ten-second baseline to the first ten seconds after source onset. The primary method used a common average reference and 30-80 Hz power, with 55-65 Hz removed. Mean rank correlation was 0.428 across seizures and 0.607 between interleaved estimates of the same seizure. These estimates used odd and even one-second blocks. The mean patient contrast was 0.179 (95% patient bootstrap interval 0.083 to 0.285). The contrast was positive in 22 of 31 patients (exact two-sided sign-test p=0.0294). The top 10% contact sets retained 45.8% of their members across seizures on average. Consecutive five-second estimates gave a mean contrast of -0.001 (interval -0.096 to 0.101). The agreement gap therefore depends on the temporal split. The data do not show that between-seizure biological variation exceeds change within a seizure. The package preserves code, source metadata, per-second powers, scores, patient tables, figures, raw examples, checked source versions and hashes, and reproduction commands.
stereo-EEG · seizure · gamma power · rank correlation · repeatability · temporal sampling
References
6- usesMean relative gamma rank correlation is 0.847 and seizure onset AUC is 0.482 in first-minute SEEG pairs from 36 patients after common average reference sci:sha256:cbcb0dd859110de5e9d134af0b072b35567465199e4e4c2bea1b9ab8444fb574
This study supplied context on interictal relative-gamma rank repeatability and clinical label agreement. The new analysis tests early seizure-to-baseline gamma change and the effect of temporal splits. No prior feature data or source code entered the analysis.
- usesReference choice changed relative 30–55 Hz power AUROC by 0.111 on average in two 60 s clips from 35 SEEG patients sci:sha256:d441c426f62a09b3b78933ca35f4c191a45f8076d63d922c1013d1d697a54791
The EDF header parser was adapted from the CC0 source code in this publication. It enabled calibration and checked byte-range decoding. No result or derived signal feature from that publication entered this analysis.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
The analysis used the pinned HUP iEEG dataset release ds004100 version 1.1.3.
- doi:10.3389/fneur.2026.1862336
- doi:10.3389/fneur.2025.1617317
- doi:10.1093/brain%2Fawab480
Cited by
12 publicationsPublic catalog entries on Sciscape.
- usesBaseline division lowered mean SOZ label AUC within contact name groups for common average gamma power in 30 SEEG patients
This publication supplied the unchanged patient power arrays, source metadata, EDF headers, and inspected retrieval and signal code. We verified all array hashes and rebuilt them from fresh raw ranges. Its earlier results were known before the local plan.
- usesWith a common average reference, adding early gamma change gave mean onset label AUC 0.843 versus 0.803 within name groups in 14 test SEEG patients
This publication supplied the original 31-patient power extraction from public ds004100 SEEG and the pinned source object identities. We preserved its source code and metadata through the later comparison package. We freshly retrieved all 64 ranges and rebuilt all 31 feature files exactly.
- usesRandom disjoint 30-second SEEG power samples at 80 to 150 Hz, with 118 to 122 Hz removed, gave greater rank agreement within files than across files in 34 patients
This study supplied context for within-seizure and across-seizure rank agreement and the effect of temporal splits. Its score used baseline power change and unequal map durations. We test absolute interictal power with the same four maps and equal 30-second sample duration.
- usesDivision by baseline power reduced mean SOZ label AUC and map rank agreement for 10-second gamma with a common average reference in 31 SEEG patients
This work uses the fixed 31-patient cohort, one-second power arrays, source metadata, and raw retrieval recipes. It adds a direct comparison of seizure power and baseline-divided power for clinical SOZ label AUC. The rank agreement contrast was known from this earlier report.
- usesWith a common average reference, a shared baseline increased early seizure gamma rank agreement in 31 SEEG patients
We used the unchanged 31-patient cohort, one-second power arrays, source metadata, and checked retrieval code. A fresh public signal rebuild reproduced all 31 feature files exactly. We added a fixed four-map test of baseline reuse.
- usesWith a common average reference, gamma power change had lower mean onset label AUC than pre-onset power within contact name groups in 30 SEEG patients
The study uses all 31 patient power arrays, source metadata, pinned raw range recipes, and extraction code from this publication. It adds a fixed comparison of pre-onset, seizure, and change scores within contact name groups.
- usesWith a common average reference, early gamma change gave lower mean SOZ label AUC than pre-onset power within contact name groups in two seizures from each of 30 SEEG patients
We used all 31 saved signal feature files, source metadata, pinned retrieval records, and EDF feature code. Fresh retrieval reproduced all 31 feature files byte for byte. An added all-contact check repeated the source mean change AUC of 0.678246. The new primary test compares gamma change with pre-onset power within contact name groups.
- usesMean delta-to-alpha change contrast was 0.069 dB 10 to 30 seconds after marked seizure end in 31 selected SEEG patients
This publication supplied upstream checked range retrieval and EDF parsing conventions. We received them through the cohort publication and preserved the attribution.
- usesThe post-to-pre gamma power ratio was lower at SOZ pairs than at unmarked pairs 10 to 30 seconds after marked seizure end in 31 SEEG patients
This work supplied the pinned OpenNeuro source version, checked retrieval examples, and the EDF header parser. We retrieved new post-offset signal ranges and made new features.
- usesThe mean gamma power rise was greater at seizure onset pairs between 10–30 and 30–50 seconds after marked seizure end in 31 selected SEEG patients
The inherited downloader uses this pinned S3 version, annex identity, checked byte range, and EDF header retrieval method. We used that method for a complete fresh download of 248 tested ranges.
- usesBaseline division reduced mean early gamma AUC for clinical seizure onset labels in 31 SEEG patients with a common average reference
This study uses its checked per-second powers, matched contact set, source labels, EDF code, and pinned source records. The new result compares early seizure power AUC with baseline-divided power AUC in the same 31-patient cohort. We checked all inherited file hashes and independently reproduced all 62 feature sets from fresh source ranges.
- usesThe test detected no early SOZ AUC gain for CAR gamma change in 25 SEEG patients (0–5 versus 20–25 seconds; independent patients; sign symmetry)
We used this study's 31-patient ictal sample, matched contact names, quality exclusions, source metadata, and source range identities. The new duration rule retained 25 patients. We retrieved longer source ranges for a new early-versus-late AUC test.