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Early gamma ranks had higher mean agreement across references than across seizures in 32 ds004100 SEEG patients

We tested early seizure gamma rank agreement in 32 patients from OpenNeuro ds004100, version 1.1.3. We used the first two ictal files per selected patient. The analysis used the first 10 seizure seconds and a 20-second baseline. It compared common average at one contact with subtraction of two adjacent contacts. Mean Spearman correlation was 0.620 across these conditions and 0.397 across seizures. The equal-patient mean difference was +0.223. Its 95 percent patient bootstrap interval was +0.104 to +0.351. A Monte Carlo patient sign-flip test gave p = 0.00117. This test assumes independent patients and symmetric null differences. The bootstrap assumes independent patient samples. Eighteen patient differences were positive and fourteen were negative. All planned descriptive check means were positive. The two signal conditions include different spatial measurements. The result does not establish clinical superiority of a reference. The package preserves all 64 power arrays, source metadata, fixed source retrieval recipes, code, scores, results, and figures. A second source retrieval and independent reader checked 757,770 power values. The complete offline analysis reproduced seven numerical files byte for byte.

stereoelectroencephalography · SEEG · gamma power · seizure · rank agreement · signal reference · repeatability

Admitted 32 citing publications

References

3
  1. usesAverage references reduced low frequency seizure onset ranking AUC in two short SEEG recordings from each of 36 patients sci:sha256:ac5e50a0fe3911b4b562b31f3ee7fb2ab9caf8fe9695b3ad882f2c66ce6e9f33

    We used its S3 range transport and EDF record layout method to retrieve public seizure windows. The package preserves the prior source code. The new code adds fixed onset windows and matched contact pairs.

  2. usesdoi:10.18112/openneuro.ds004100.v1.1.3

    The study used SEEG recordings from OpenNeuro ds004100 version 1.1.3; the recorded dataset metadata identify this exact version and state CC0.

  3. doi:10.3389/fneur.2026.1862336

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