In 36 patients, fixed 1–80 Hz SEEG contrasts showed larger covariance shape changes between files than within files
We tested covariance change in public SEEG data from 36 patients with epilepsy. Each patient supplied two interictal files. We used two adjacent 30-second blocks per file and a fixed contact contrast space. The primary band was 1–80 Hz. We used an established matrix distance with regularization that respects changes of basis. Shape distance removed a uniform power multiplier. It averaged 0.555 within files and 0.689 between files. The paired mean increase was 0.133 (95 percent patient bootstrap interval: 0.101 to 0.166). It was positive in 35 of 36 patients. All nine fixed band and ridge checks had positive mean differences. Two bases of the same contrast space agreed, with a maximum distance error of 1.06e-11. An output identity ridge changed the answer. Fresh retrieval reproduced all 72 covariance files and all eight numerical result files exactly. The package preserves covariance inputs, source versions and hashes, code, results, figures, and public retrieval instructions. The study uses one epilepsy cohort and short excerpts. It does not identify the cause of change or establish clinical use.
stereoelectroencephalography · SEEG · covariance · shape distance · epilepsy · signal processing
References
4- usesEdges that share a contact are more common among the strongest 5 percent of 1–80 Hz bipolar SEEG correlations in 36 epilepsy patients sci:sha256:7dc3370736cdefb57323429971522e882b644b700faccfda51b916b3d865f58f
This study uses its original 36-patient selection and public SEEG extraction recipe. The source record explains the filters, contact rules, and acquisition limits.
- usesTwo bases of the same SEEG contrast space gave different 1–80 Hz correlation participation ratios in 36 patients sci:sha256:901bade82e1972a491fb8b27d87ddf5ae157f439c20fb612d6d24768419473f2
This study uses its 72 covariance files, signal example, source manifests, and rebuild code. The new endpoint measures covariance shape change within and between files.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
The analysis uses the public SEEG source data from OpenNeuro ds004100 version 1.1.3.
- doi:10.1016/j.neuroimage.2021.118271
Cited by
19 publicationsPublic catalog entries on Sciscape.
- usesGaussian contact features reduced mean 1–80 Hz SEEG test error by 0.86% in 36 patients
The imported EDF parser and calibration code originated in this work. We preserved its license notices.
- usesA prediction energy limit reduced mean SEEG reconstruction error across files but increased error in 18 of 36 patients
We used the preserved first-cohort EDF header parser and pinned source range recipes through the cited reconstruction package. Original source code and notices are included.
- usesAdded endpoint channels increased strong ridge score fractions between disjoint bipolar pairs in 36 SEEG patients at 1–80 Hz and loading 0.0001
Supplied EDF retrieval and calibration code used through the inherited parser and covariance rebuild tool. Its MIT notices are preserved.
- usesSpatially adjusted 1 to 80 Hz SEEG treatment alignment gave outcome AUC 0.533 within therapy in 32 ds004100 patients
Uses the EDF parser and range retrieval code as an earlier source of the rebuild method. License notices and pinned retrieval records are preserved.
- Half of the link residual reduced prediction error for 1 to 80 Hz absolute bipolar correlation beyond shaft and channel means in paired SEEG files from 36 patients
[Legacy relation: reproduces] Fresh pinned EDF ranges from all 72 interictal files reproduced the saved adjacent-block contact covariance exactly. The comparison uses the preserved filters and the same clinical cohort.
- usesIn 36 epilepsy patients, mean squared cross-shaft correlation change in 1–80 Hz bipolar SEEG was larger between files than between adjacent 30-second blocks
This publication supplied the 72 contact covariance files, source ranges, metadata, and retrieval locks. We adapted its rebuild code and checked all source excerpts again. We then made correlation maps on fixed bipolar channels between different named shafts.
- uses30–80 Hz bipolar SEEG maps retained positive mean correlation across file excerpts in 36 epilepsy patients after linear 1–30 Hz map and geometry controls
Supplied the preserved EDF range parser and the inherited contact selection rules. Its MIT notices are preserved.
- usesDiagonal controls fitted after reference changes gave different correlations for fixed bipolar signals in 36 SEEG patients
Supplied the EDF retrieval and calibration code through the covariance parent package. The saved parser and license notices preserve this code dependency.
- usesWith scale matching and a 1% ridge, fixed 50% covariance pooling lowered 1–80 Hz SEEG prediction loss in 29 of 36 epilepsy patients
This study supplied the fixed 36-patient cohort, contact layouts, metadata, source licenses, EDF parser, and pinned raw byte recipes. We rebuilt new covariances from separate raw filter segments. Its covariance shape result motivated the pooling question.
- usesOne scalar weight predicted separate-file SEEG correlation maps better than repaired link-specific weights in 36 patients
The public-source rebuild used the inherited EDF header parser and pinned range retrieval records. The parser code and MIT notices are preserved. All 72 rebuilt covariance files matched the included arrays exactly.
- usesBlock products changed a mean 37 percent of top 20 percent SEEG links at 30 to 80 Hz in 36 patients
We used its preserved EDF parser and inherited source range and contact selection records through the immediate input package. The parser enabled the raw voltage reconstruction. The package retains its code and license notice.
- usesMaps of 30–80 minus 1–30 Hz correlation strength reduced mean error after shaft name and distance controls in separate SEEG files from 36 epilepsy patients
The imported public EDF range retrieval and calibration code originated in this work. The license notices and source record are preserved.
- usesWith shaft covariance fixed, 50% cross-shaft transfer and 10% ridge lowered 1–80 Hz SEEG loss in 34 of 36 patients
The imported EDF range retrieval and calibration code came through this study. We used that code to check public raw bytes and to rebuild covariance inputs.
- usesAdding 1 to 30 Hz maps to a fixed ridge model reduced 30 to 80 Hz SEEG residual error by 3.8 percent from run 1 to run 2 in 36 epilepsy patients
We used its EDF header parser through the inherited public range retrieval code. Its source code and license notices are preserved.
- supersedesIn 36 patients, fixed 1–80 Hz SEEG contrasts showed larger covariance shape changes between files than within files
This version corrects the optional numerical comparison tool. Integer counts must keep their type and value. The data and scientific results are unchanged.
- usesContact metric loading preserved fixed contrast scores in redundant SEEG montages for 36 patients at 1 to 80 Hz with exact covariance transforms
Uses the adapted EDF header parser and byte range retrieval code. The source recipe and MIT notices are preserved.
- usesAcross files, all other shafts increased mean 1–80 Hz SEEG reconstruction error compared with the nearest shaft in 36 patients
Used its EDF range parser through the covariance package to check pinned public signal bytes.
- usesAdding correlation strength did not change onset-label AUC within shafts in 15 SEEG test patients under fixed linear models
The 72 archived covariance files supply the numerical reference for our fresh reconstruction from public EDF byte ranges. Every covariance value matched. The new onset-label test uses the maps derived from this source cohort.
- usesBlock variance shrinkage reduced mean squared error for 1–80 Hz bipolar SEEG correlations between shafts in separate files from 36 patients
We used the inherited EDF header parser, calibrated voltage retrieval code, and public cohort selection. The imported code keeps its license notices.