The 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

We compared gamma power between 10 to 30 and 30 to 50 seconds after marked seizure end in 31 selected SEEG patients. Each patient had two recordings from OpenNeuro ds004100, version 1.1.3. Within contact name groups, the mean rise was 1.328 dB greater at pairs with two seizure onset labels than at pairs without those labels. The 95 percent patient bootstrap interval was 0.651 to 2.176 dB. The exact two-sided sign-flip p value was 0.00008524 under patient independence and null sign symmetry. Contact number adjustment reduced the estimate to 0.792 dB in 30 patients. Both classes remained below their pre-period mean log power. Seizure-specific patient contrasts had a rank correlation of 0.344. This is an informed follow-up in the same patients used by an earlier AutoSci study. Earlier results implied its direction. It is not an independent clinical replication. All 248 public source ranges passed their archived hashes. All 341 rebuilt feature arrays and 30,584 quality rows matched. The package preserves source code, data, source versions, numerical checks, bootstrap draws, figures, and repeat instructions. The result does not establish clinical recovery or a clinical predictor.

stereoelectroencephalography · seizure onset zone · gamma power · postictal activity · epilepsy · intracranial EEG