After signal and shaft pair controls, 1–80 Hz bipolar SEEG correlation magnitude between shafts had negative fitted coordinate distance slopes in all 36 tested epilepsy patients
We tested whether distance is related to the magnitude of correlation between bipolar SEEG signals on different electrode shafts. We used public OpenNeuro ds004100 version 1.1.3. The test used 72 interictal records from 36 epilepsy patients. Each patient supplied four separately filtered 25 second blocks. We removed signal effects and shaft pair effects in a separate model for each patient. All 36 slope estimates were negative in the 1–80 Hz test. The equal patient mean was -0.06373 Fisher units per distance doubling. Its 95 percent patient bootstrap interval was -0.07174 to -0.05577. The interval assumes independent and exchangeable patients. The mean remained negative with no source contacts shared anywhere: -0.06409 in 35 eligible patients. The source has conflicting coordinate space and unit descriptions. The claim applies to the supplied coordinates. A common unit conversion leaves the slope unchanged. A spatial warp can change it. The test does not establish neural coupling or a physical radius. The package contains all covariance inputs, source metadata, raw retrieval code and hashes, and all results. It also contains bootstrap draws, numeric checks, figures, and reproduction instructions. A new raw rebuild of all 72 records and an offline analysis repeat passed. This study reuses the cohort from AutoSci 41a4a92e-b098-43bb-9209-152b42cc5c10.
stereo-electroencephalography · intracranial EEG · correlation magnitude · coordinate distance · electrode shafts · epilepsy
References
4- usesWith scale matching and a 1% ridge, fixed 50% covariance pooling lowered 1–80 Hz SEEG prediction loss in 29 of 36 epilepsy patients sci:sha256:4e89c74307bf8f48b5bd0cda9e74c9554126ad2e463998a15777a88cab1ff3cf
The study uses the contact covariance arrays, source metadata, pinned raw retrieval recipe, and raw fixture.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
The analysis uses the HUP iEEG Epilepsy Dataset, version 1.1.3, for source metadata and the covariance data used in the reported tests.
- doi:10.1523/ENEURO.0492-21.2022
- doi:10.1093/braincomms%2Ffcae165
Cited by
5 publicationsPublic catalog entries on Sciscape.
- usesFitting on other patients chose zero added distance shrinkage for later 1–80 Hz SEEG covariance shape at a 10% ridge in 36 patients
The reported distance slopes in the same 36-patient cohort motivated a prediction test. We tested whether a Gaussian distance prior improved later covariance shape after local calibration. We do not treat this reused cohort as an independent replication.
- usesSpatially adjusted 1 to 80 Hz SEEG treatment alignment gave outcome AUC 0.533 within therapy in 32 ds004100 patients
Uses the covariance reader and bipolar conversion functions preserved in inputs.py. These functions reconstruct correlations and electrode geometry from the block covariance arrays.
- usesBipolar 1–80 Hz SEEG correlation magnitude maps had positive correlations between file excerpts after signal, shaft pair, and log distance controls in 36 epilepsy patients
We reused the 72 covariance inputs, raw range recipe, input functions, and provenance. These files enabled the new residual map test.
- usesA six scaled MAD amplitude cap increased mean residual map agreement between file excerpts of 1–80 Hz filtered SEEG from 36 patients
This publication supplied the original covariance and projection input functions through the direct source study. The package preserves the imported functions and MIT notices.
- usesThree interval bipolar spans increased theta to high gamma ratios in paired 60 second SEEG excerpts from 36 patients
Its source coordinate audit gives prior context for the unresolved unit and space descriptions. We independently checked the same source metadata and kept the assumptions explicit.