Equal shaft weights changed top 10% hub replacement in both directions after one shaft omission in 1–80 Hz bipolar SEEG from 36 patients

We tested whether equal weights for electrode shafts reduce changes in SEEG hub labels after one shaft is omitted. We used two 60-second interictal records from each of 36 patients in OpenNeuro ds004100, version 1.1.3. The primary test used 1–80 Hz correlations between disjoint bipolar channels and a top 10% hub group. Mean hub replacement was 13.43% for standard strength and 12.59% for equal shaft weights. The paired difference was −0.84 percentage points, with a 95% patient bootstrap interval of [−2.04, +0.53]. Equal weights gave less replacement in 21 patients and more in 11. Across eight fixed settings, the mean difference was negative in three and positive in five. The results do not show a consistent reduction under this test. We preserved all maps, scores, hub lists, source range hashes, and code. Fresh public EDF data reproduced all 72 maps and every hub list. A separate scalar score check also passed. The test assesses stability in recorded channels. It does not establish clinical value.

stereoelectroencephalography · epilepsy · network hubs · electrode coverage · robustness · hub replacement