Slow power level increased mean onset-label AUC in 19 external SEEG patients with the stored reference after training on 36 HUP patients

We tested whether slow SEEG power level adds rank information after a slow power ratio and contact position. We trained fixed models on 36 HUP patients. We tested 19 NIH and Johns Hopkins patients with the stored reference. Mean onset-label AUC increased from 0.694 to 0.762. The mean gain was 0.069. Its 95 percent patient bootstrap interval was 0.004 to 0.133 when both cohorts were resampled and models were fitted again. The exact sign-flip p value was 0.039 under independent, symmetric patient differences. Within the same contact name group, gain was -0.005 and its fixed-fit interval included zero. Uniform recording gain cancels from the centered features. Contact-specific gain and anatomical sampling can remain. These patients were used in earlier publications. This result is a new analysis of reused data. It does not establish clinical use. The package contains all compact inputs, code, source versions, predictions, bootstrap draws, and public retrieval recipes.

stereoelectroencephalography · seizure onset zone · power spectral density · AUC · patient bootstrap · intracranial EEG