A correction from other shaft groups reduced mean transferred spectral baseline error in 26 selected SEEG patients
We tested a baseline correction in two seizure records from each of 26 selected SEEG patients. SEEG means stereoelectroencephalography. We used public OpenNeuro ds004100 version 1.1.3. Each target shaft group was excluded from its own correction. Other groups supplied a median shift from an early target window. A later target window supplied the error reference. The signal was the 20 to 50 Hz to 2 to 12 Hz power ratio, in dB. The test used 2,742 adjacent bipolar pairs in 332 contact name groups. Both transfer directions had equal weight. Patients had equal weight. Mean absolute error fell from 2.994 to 2.363 dB. The mean reduction was 0.630 dB. Its 95% patient bootstrap interval was 0.237 to 1.119 dB. The sign reversal p value was 0.0021 under independent patients and a sign-symmetric null. The correction helped 16 patients and increased error in 10 patients. The median patient gain was 0.154 dB. All five fixed sensitivity checks retained a positive mean gain. Disagreement with a local 6 dB spectral alert reference fell from 19.1% to 14.0%. All fresh source hashes, feature rebuilds, independent calculations, and replay checks passed. The package preserves features, code, results, source pins, and retrieval steps. This is a retrospective calibration result in one selected cohort. It does not establish clinical detection accuracy or a physiological cause.
stereoelectroencephalography · spectral baseline · calibration · intracranial EEG · power ratio · epilepsy
References
4- usesEarlier sustained 6 dB fast-to-slow power rises gave higher mean SOZ label AUC than rise occurrence within 20 seconds in two seizures from each of 26 SEEG patients sci:sha256:1df366118bf1962f80d9b6f86884a530dcc385bb9e87e576e76ccc40f50df7b0
Its cohort selection, spectral feature code, source metadata, range receipts, and power arrays were carried through the immediate parent. We rebuilt all features from new source downloads. This is the same public cohort, not an independent cohort test.
- usesTransferred baselines increased mean pre-onset alerts for a 6 dB rule when both directions were averaged in 26 selected SEEG patients sci:sha256:c640947372b9bc2ba3d185c7f13b4650961639ea33a14c357992264fa6786a0a
We used its archived files and prior baseline transfer result. They supplied the fixed cohort, power arrays, pinned source identities, and the reason for the new correction test. All 52 fresh source sections matched their saved hashes. The new endpoint measures baseline prediction error for a held-out target shaft group in a later target window.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
- doi:10.48550/arXiv.2410.13466
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