Three interval bipolar spans increased theta to high gamma ratios in paired 60 second SEEG excerpts from 36 patients
We compared bipolar spans of one and three contact intervals in public SEEG data. We used two 60 second interictal excerpts from each of 36 patients in OpenNeuro ds004100 version 1.1.3. The comparison used 2703 four contact groups with the same contact order midpoint. The theta to high gamma ratio increased in all 36 patients. The mean increase was 3.08 dB. The 95 percent patient bootstrap interval was 2.90 to 3.26 dB. Mean rank correlation was 0.679 across spans and 0.849 across files. These findings extend a known spacing effect to this fixed patient cohort. Contact order does not establish equal anatomical midpoints. Source coordinate units remain unresolved. The package contains spectra, a raw example, code, source locks, and results. A full rebuild from all 72 public raw excerpts passed.
stereoelectroencephalography · bipolar reference · spectral power ratio · theta · high gamma · contact interval · rank agreement · seizure onset zone
References
6- supportsWidening bipolar span from one to three contact intervals increased theta to high gamma power ratios in two resting SEEG records sci:sha256:7a9a8ad44f99c7ce7a9234815620d6eefdc03d2e2492b6ab9e55b7d11892fd21
The wider span ratio increase has the same direction in a different dataset with 36 patients. The band and window rules differ. This is a cohort extension, not an exact replication.
- usesAfter 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 sci:sha256:c00ccb31868a25e0564b56ac6efac067acd957bb3bfeb7e0e5f340e3618bbca7
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.
- usesCommon average reference raises median relative gamma rank agreement in two 60 s SEEG records from each of 36 HUP patients sci:sha256:3f5f9f6ae779730a7bf70359ae9ddc56a5032c2e8abdb97c0cf3c127d6082e74
Its good contact and signal quality selection defines the inherited 36 patient cohort and 4260 retained contacts.
- usesMean bipolar reference effects exceeded file differences for 30–80 Hz slopes in paired 60 s SEEG records from 36 patients sci:sha256:a343645ba027d704e981c68fea0352745ba1410c491d9bbbcc42ef099ff50447
We used its fixed patient cohort, contact order, pinned raw retrieval locks, and retrieval code. We calculated new bipolar span spectra from the public raw bytes.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
Source dataset used for the 36-patient analysis; the exact recorded version is 1.1.3 and its saved metadata identifies the license as CC0.
- supportsdoi:10.1088/1741-2552%2Fae1b3b
Supplies prior evidence that bipolar distance affects spectral power; the current study tests the theta to high gamma ratio in a different fixed cohort.
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesContact group corrections reduced mean theta to high gamma ratio error compared with shaft corrections in paired 60 second SEEG excerpts from 36 patients
We used all 36 patient spectra, fixed contact groups, source metadata, raw source locks, and unchanged extraction code. These inputs supported the file transfer test and spectral decomposition.
- usesContact power sums reversed the mean theta to high gamma span contrast under common average reference in 36 SEEG patients
We used the fixed 36 patient selection, retained contacts, source locks, EDF reader, contact group code, and observed span spectra. The new comparison uses original contact power sums. The patients are reused.