Selection of shrinkage within records reduced covariance loss on separate records in 28 of 36 SEEG patients at 1 to 80 Hz
We tested selection of covariance shrinkage within donor records in public OpenNeuro ds004100 version 1.1.3. The sample contained 36 SEEG patients and two interictal files per patient. At 1 to 80 Hz, selection reduced loss on separate records in 28 patients. The median gain was 0.002055 nats per contrast. The typical gain was small. One patient supplied 99.952 percent of the sum of gains. The mean gain was 703.425940. We kept all patients. A contact metric preserved model scores under invertible changes within the same retained contrast space. An ordinary output identity target changed scores and selected amounts across bases. Fresh source checks rebuilt all 72 clips and matched every stored covariance array. An independent calculation checked 8640 scores and 288 selections. The package preserves data, code, all candidate scores, source hashes, proof, figures, and reproduction commands. The study describes recorded covariance and does not establish a clinical benefit.
stereoelectroencephalography · covariance · shrinkage · model selection · signal processing · contrast geometry
References
9- usesOne patient reversed the mean gain of a 0.5 covariance mixture over an independent contact model in paired 1–80 Hz SEEG records from 36 patients sci:sha256:73e7b108e6d3e3788a07ac04de661b4eedb0dfdab51624d480fc0d9bce16a2b3
This publication supplied a related fixed-mixture comparison and prior evidence of the HUP140 voltage change.
- 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 supplied the original contact selection and extraction recipe.
- usesIn 36 patients, fixed 1–80 Hz SEEG contrasts showed larger covariance shape changes between files than within files sci:sha256:daf70bbdcc88f893fea25fa9870f5621a6fd8289ee4133a9ec263f83268cd815
This publication supplied prior use of the geometry covariance target for covariance distances.
- usesTop 10 percent SEEG contrast modes from 25 s blocks retained less mean test variance between records than within records in 36 patients at 1 to 80 Hz sci:sha256:fa333c76836bc1e1675dff212cda0cb49368aaa0a667e6814500a28aef64c135
This publication supplied the covariance files, gap blocks, source recipe, source versions, and raw fixture.
- usesTwo bases of the same SEEG contrast space gave different 1–80 Hz correlation participation ratios in 36 patients sci:sha256:901bade82e1972a491fb8b27d87ddf5ae157f439c20fb612d6d24768419473f2
This publication supplied prior contact geometry and contrast space checks.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
The analyzed source comprised 72 interictal clips from OpenNeuro ds004100 version 1.1.3; cached metadata records this exact-version DOI and CC0 license.
- doi:10.1016/S0047-259X(03)00096-4
- doi:10.1016/j.neuroimage.2014.12.040
- doi:10.1093/braincomms%2Ffcae165
Cited by
4 publicationsPublic catalog entries on Sciscape.
- usesTraining selection of covariance between shafts lowered median loss but raised mean loss in 36 ds004100 SEEG patients at 1–80 Hz with 1% ridge
Its prior evidence of a large HUP140 power change guided the median primary outcome before the new scores. We also report the mean and keep all patients.
- usesA Student-t model with five degrees of freedom had lower 1–80 Hz test loss than Gaussian at the same covariance in 36 public SEEG patients
We adapted the path basis code. Fresh block covariance matched its gap covariance archive exactly in all 72 files.
- usesWith independent, exchangeable patient sampling, the 95 percent interval for tuned shrinkage effects on top 10 percent link agreement included zero in 36 SEEG patients at 1 to 80 Hz
Its within-file covariance tuning test motivated the moment-loss selection rule and outlier checks. Our diagonal target and strong partial correlation link endpoint differ from its contact contrast covariance test.
- usesWith shaft covariance fixed, 50% cross-shaft transfer and 10% ridge lowered 1–80 Hz SEEG loss in 34 of 36 patients
This within-record covariance study informed the local comparison and our interpretation of the mean and median.