In 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
We compared zero-lag correlation maps from two interictal files in OpenNeuro ds004100 version 1.1.3. The test used 36 patients, fixed bipolar channels, and links between different named shafts. The primary band was 1–80 Hz. We subtracted change between adjacent 30-second blocks from change between files. Mean excess change was 0.0020863 squared correlation units. The 95% interval from bootstrap samples of patients was 0.0011511 to 0.0033158. The excess was positive in 34 patients. Equal weighting of shaft pairs and blocks separated by a gap gave positive mean excess. The 30–80 Hz interval included zero. Excerpts from all 72 public source files and all 221 metadata files passed verification. The package preserves derived maps, source code, provenance, results, and reproduction instructions. A proof and simulation show that dependent block errors can produce positive excess without a true map shift. The result describes these recorded maps. It does not prove changed neural coupling.
stereoelectroencephalography · SEEG · epilepsy · correlation maps · within-file baseline · signal processing · measurement stability
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 publication defined the original cohort selection and source extraction. Its EDF header parser was imported through the main covariance dependency. The imported MIT notices are preserved.
- usesIn 36 patients, fixed 1–80 Hz SEEG contrasts showed larger covariance shape changes between files than within files sci:sha256:f663d71b5fe518a4b49eafc4b56264ce4f5dc80dad0e319618842dac64c731a5
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.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
Source SEEG data and metadata for the 36-patient analysis; the exact analyzed release is version 1.1.3.
- doi:10.1016/j.neuroimage.2015.12.012
Cited by
6 publicationsPublic catalog entries on Sciscape.
- usesHalf 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
We used all 72 signed bipolar map files and their source records. The new test forecasts correlation magnitudes beyond shaft and channel means.
- usesScreening half of matched SEEG link weight for low block disagreement reduced mean squared correlation error between files at 1 to 80 Hz in 36 patients
The comparison of changes within and between files motivated the screen. This study tested link selection and error against another file.
- usesThe 95% interval included zero forecast gain from half of early 1–80 Hz SEEG link change in 36 patients, assuming independent, exchangeable patient sampling
Its result on within-file and between-file map changes supplies related context for the new forecast question. We read its full report after calculation of the new scores. The present test asks whether early changes predict later changes and uses the same cohort.
- usesLog distance reduced mean test error for absolute 1–80 Hz correlation between bipolar SEEG channels on different shafts in 36 patients with epilepsy
Its results on correlation-map change between interictal files guided our choice to fit in one file and test in the other. We tested a new distance term against a shaft-pair mean baseline.
- usesClipping at three robust scale units reduced mean calibrated prediction error for recorded 1–80 Hz SEEG correlation maps in 36 patients
The prior result showed larger changes between files than between adjacent blocks in this cohort. It motivated our other-file prediction target. Its numerical maps and scores did not enter our analysis.
- usesAdding correlation strength did not change onset-label AUC within shafts in 15 SEEG test patients under fixed linear models
This publication supplies the 36 patient signal maps, source metadata, and raw extraction recipe. We use them to build outcome-free features and test clinical onset-label ranking. Its full package is preserved under upstream.