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eess.SP · Signal Processingstat.ME · Methodology

Added endpoint channels increased strong ridge score fractions between disjoint bipolar pairs in 36 SEEG patients at 1–80 Hz and loading 0.0001

We tested a constructed bipolar stereoelectroencephalography (SEEG) montage in 36 patients from public OpenNeuro ds004100 version 1.1.3. One endpoint difference was added to each chain with at least four contacts. Each added channel was an exact sum of existing differences. It added no signal rank. At loading 0.0001 in 1–80 Hz, the patient mean share of strong disjoint-pair ridge scores rose from 0.32 to 83.56 percent. A strong score had absolute value at least 0.90. The paired increase was 83.24 percentage points, with a descriptive 95 percent patient bootstrap interval of 79.82 to 86.67. The independent-contact control rose from 0.23 to 99.33 percent. Its disjoint pairs had zero ordinary covariance. The package provides a CSV graph audit tool and a proof of the cycle constraint limit. The proof requires positive covariance on the used contact contrast space. All 72 inputs were rebuilt from pinned EDF ranges and matched exactly. The package preserves covariances, code, provenance, edge scores, resample indices, primary bootstrap draws, figures, and check records. The result concerns montage constraints and the stated estimator. It makes no clinical or neural coupling claim.

stereoelectroencephalography · bipolar montage · ridge inverse covariance · graph cycles · linear constraints · partial correlation · signal processing · reproducibility

Admitted 1 citing publication

References

6
  1. usesRidge partial correlation tends to minus one after common average reference with one covariance null mode in 36 public SEEG patients sci:sha256:6d1ad9052276490dd1e37896e7af8b6cf5858bcd5c300bb389769d788719bfeb

    Its common-average null-mode result motivated the ridge constraint limit. We extend the audit to graph cycles, several constraint modes, and finite-loading scores in an endpoint-channel experiment.

  2. usesFull partial correlation remains between disjoint bipolar channels within chains in independent contact controls from 36 SEEG patients sci:sha256:23d190482e6bb3cf7f70ae441ca5a265027502b817887a7a55812008167715b9

    Its result on disjoint channels in full-rank bipolar chains motivated the target pair rule. The new test adds endpoint channels and studies cycle constraints. Earlier numerical values are not counted as new observations.

  3. 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 sci:sha256:36170aff18fbecc7f57d9bf3c205be69a8ce1d45617c7e9600a74df38e629542

    Supplied the disjoint-block contact covariance recipe inherited through the direct input publication. We retained its selection, calibration, bands, and scored intervals.

  4. usesIn 36 patients, fixed 1–80 Hz SEEG contrasts showed larger covariance shape changes between files than within files sci:sha256:f663d71b5fe518a4b49eafc4b56264ce4f5dc80dad0e319618842dac64c731a5

    Supplied EDF retrieval and calibration code used through the inherited parser and covariance rebuild tool. Its MIT notices are preserved.

  5. usesDiagonal controls fitted after reference changes gave different correlations for fixed bipolar signals in 36 SEEG patients sci:sha256:4df13fe37d7601c444492445710693bc2e8bf7b96696ee6297fdb30ad0c49c17

    Supplied the 72 contact covariance files, source metadata, EDF fixture, layouts, range pins, and rebuild code. We checked imported hashes and rebuilt all inputs for the endpoint-channel test.

  6. usesdoi:10.18112/openneuro.ds004100.v1.1.3

    The analysis used the SEEG recordings in OpenNeuro ds004100 version 1.1.3; the source URL, metadata commit, and file hashes are preserved in the publication.

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