The 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

We tested whether gamma decrease after a seizure adds to onset gamma ranks. The public source was OpenNeuro ds004100 version 1.1.3. The main sample had 29 patients and 472 adjacent bipolar pairs on 62 shafts. We selected an added rank weight from 0% to 50% on run 01 of each patient and tested it on run 02. Mean test AUC changed from 0.9023 to 0.9045. The mean gain was 0.0023. The 95% patient bootstrap interval was -0.0179 to 0.0232. It included zero. Its population interpretation requires independent, exchangeable patients. The exact sign test gave p = 0.8281 under symmetric null patient effects. The rule selected onset alone in 21 patients. All ten planned descriptive checks are reported. This exploratory result did not establish an added mean gain under the tested rule. It did not establish equivalent scores or absence of useful post-seizure information. Separate checks matched 320 public signal ranges, 197 metadata files, and all 279,180 stored gamma power values. A fresh numerical run matched all 16 analysis output files. The package preserves the unchanged parent power data, code, source pins, candidate tables, uncertainty draws, and repeat instructions. The result concerns clinical SOZ marks in a reused cohort. It does not establish surgical benefit.

stereoelectroencephalography · epilepsy · seizure onset zone · gamma power · rank AUC · separate-seizure validation · patient bootstrap