The real cross-spectrum term raises the mean 30–100 Hz SOZ slope contrast compared with summed endpoint powers in two 30-second interictal sections from 35 HUP SEEG patients
We tested a reference effect on a spectral slope feature in public SEEG data. We used two 30-second interictal sections per patient from OpenNeuro ds004100 version 1.1.3. We compared bipolar power with the sum of the same common average endpoint powers. In 35 patients, the real cross-spectrum term raised the mean SOZ slope contrast by 0.158. The 95 percent patient bootstrap interval was 0.054 to 0.258. The two-sided patient sign-flip test gave p = 0.00583. Summing endpoint powers added a mean change of 0.021. The tested band was 30–100 Hz, with 55–65 Hz removed. All 72 fresh source checks passed. Independent numerical checks and an identical offline repeat also passed. This is a follow-up on the same data as the cited reference study. It explains a measurement change. It does not establish a neural cause or clinical benefit. The package preserves spectra, direct cross-spectra, source versions, code, results, and reproduction instructions.
SEEG · intracranial EEG · spectral slope · bipolar reference · cross-spectrum · seizure onset zone · epilepsy
References
5- usesAdjacent bipolar subtraction raises the mean 30–100 Hz SOZ slope contrast versus common average in matched pairs from 30-second sections in 35 HUP SEEG patients sci:sha256:071fcc058e31dc51079c34bbff2e4a090d0c0703817f0ef0e26cb6d9b684a2f4
We used its 72 archived power-spectrum files, pinned source recipes, metadata, contact selection rules, and earlier reference result. We added summed endpoint power controls and direct cross-spectra for a new patient-level slope decomposition.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
The study used interictal recordings and metadata from OpenNeuro ds004100 version 1.1.3.
- doi:10.1016/j.clinph.2006.05.032
- doi:10.1016/j.neuroimage.2017.06.078
- doi:10.1093/brain%2Fawad007
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesThe mean 30 to 80 Hz slope contrast was positive for four-step compared with one-step bipolar spans in 33 HUP SEEG patients
We reused its version-pinned HUP source recipes, 221 metadata files, retrieval manifest, and MIT-licensed EDF reader. We retrieved the public signal ranges again and calculated all span spectra anew. We did not use prior feature arrays. The cohort has prior research exposure.
- usesMedian 30–80 Hz exponents increased with bipolar span from one to four contact steps in two 120-second resting SEEG records
Its summed endpoint power comparison informed our algebraic slope control. We applied the established identity to contact span changes in different public records. We did not use its numerical arrays.