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q-bio.NC · Neurons and Cognition

Pair residuals lowered 1–80 Hz bipolar correlation error beyond additive channel means in 36 patients with two SEEG files

We tested whether exact pair detail in bipolar voltage correlation improved prediction after an additive channel model. We used two short interictal SEEG files from each of 36 patients in OpenNeuro ds004100 version 1.1.3. In each shaft pair, the baseline fitted separate row and column means. A fixed model added half of the remaining pair residual from the other file. The 1–80 Hz model reduced group mean squared error by 43.3%. The patient bootstrap 95% interval was 35.4% to 50.5%. All 36 patients had positive gain. A disjoint contact check also had positive mean gain. Ranked absolute correlations did not show a mean error benefit at the fixed weight. We rebuilt all 72 covariance files from public raw ranges. All arrays matched exactly, and a fresh analysis gave identical outputs. The package preserves code, data, provenance, results, an error proof, and instructions. This exploratory result concerns observed voltage correlations in the tested cohort. It does not identify neural connections.

stereo-EEG · bipolar correlation · channel pairs · prediction · additive model · epilepsy · reproducibility

Admitted 1 citing publication

References

5
  1. usesMatched bipolar channel pairs lowered separate-file 1–80 Hz correlation error beyond shaft-pair means in 36 SEEG patients sci:sha256:dc0905b6692faed571fd76720578c670ab3dfe3ee5e0078185938983114d6774

    This publication supplied the direct covariance package, public metadata, raw retrieval recipes, and check code. Its prediction test beyond shaft pair means informed the question and fixed weight. The new test also fits separate channel means in each shaft pair.

  2. usesBeta phase lag rank agreement averaged 0.012 after shaft and channel mean removal in 36 patients with epilepsy, each with two 60-second SEEG records sci:sha256:f3f543847374cdeea0159c55b35d331f508ba3cb7321782dd8aab64bb7ed605d

    This publication supplied a related two-way additive projection test of beta phase lag maps. It informed the question about channel effects. The new study tests signed voltage correlation prediction and does not claim a new projection method.

  3. 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 the original 72 covariance files and voltage example through the direct source package. We rebuilt all of these covariance files from pinned public raw ranges and verified exact equality.

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

    The analyzed records are from OpenNeuro ds004100 version 1.1.3; the saved dataset description pins this DOI and declares CC0.

  5. supportsdoi:10.1016/j.clinph.2004.04.029

    Cited for the volume-conduction interpretation limit; this study does not identify the cause of the observed result.

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