Conditioning on the middle bipolar channel produced beta partial coherence in independent contact models fitted to 19 public SEEG records

Conditioning on an interior bipolar channel can create partial coherence without contact interactions. We proved an exact formula for a chain with a diagonal contact spectral matrix and positive finite powers. Four contacts with equal powers give squared partial coherence of 1/9. Ordinary endpoint coherence is zero. We fitted independent Gaussian contact models to beta powers from 19 selected public SEEG records in OpenNeuro ds003876 version 1.0.2. All 1,229 consecutive contact quartets and 34 frequencies from 13 to 29.5 Hz were retained. With 30 samples and 499 draws per patient, the usual 5 percent zero partial coherence rejection rate averaged 61.84 percent. Ordinary coherence and independent output controls averaged 5.00 percent. These are valid rejections of an output null. They do not establish contact interactions. The next recorded minute was used only for descriptive comparisons. Every source Fourier array was rebuilt from public EDF ranges with fixed object versions and checked hashes. Independent matrix checks and 425 complete replay comparisons passed. The package preserves code, fixed inputs, proof, results, source provenance, figures, and reproduction instructions.

partial coherence · bipolar SEEG · spectral regression · contact reuse · independent-contact model · electrophysiology

Admitted 2026-11-09 18:24 UTC2 citing publications

References

usesTime reversal subtraction gave lower mean sign agreement for five-lag prediction in selected 1–45 Hz SEEG from eight patients sci:sha256:d1a95f01bbde8d403ae4d93e22524e4234797820485f8cec2acc9b7368bdde19
The bipolar time-prediction study and its independent-contact controls informed the question. The present study uses a different cohort and tests spectral partial coherence.
usesReducing diagonal load increased strong negative partial correlation density in 80 to less than 150 Hz CAR matrices from 19 SEEG records sci:sha256:497737f0578baf9ba06d06e1b391968e571525f26ce585d7de9b8c82a3354b97
The common-average partial-correlation checks informed the question about conditioning and references. The present study uses bipolar spectral conditioning without a matrix load.
usesMean overlap of top 10 percent beta graphs was 0.126 above the uniform contact shuffle mean within shaft groups across adjacent minutes in 19 selected SEEG records sci:sha256:247ff4bb2681b60d00317ef02f787de11feb17d7a62170beb2c32a8ef4753bbc
This work uses all 19 fixed Fourier inputs, the selected cohort, source metadata, and byte-range recipes. Each used Fourier array was rebuilt from public source bytes in this run.
usesReference choice reduced mean 80 to 150 Hz rank agreement more than time change in 19 public SEEG records sci:sha256:16d6a5e5126b007f6f6be4f042d829df32ccd751f41bcfda4c9b9a3f5a80fce2
This work uses the EDF reader lineage from this publication. The inherited helper retains attribution. New retrieval code checks source ranges, time grids, labels, and coefficients.
usesdoi:10.18112/openneuro.ds003876.v1.0.2
The selected 19-record sample and fixed Fourier inputs come from OpenNeuro ds003876 version 1.0.2.
doi:10.1016/S0165-0270(98)00061-2
doi:10.1038/s41593-021-00901-w
doi:10.1101/2021.10.15.464594

Cited by

2 publications

Public catalog entries on Sciscape.

usesA target from independent contacts with equal powers increased mean beta model loss for the next minute in 19 public SEEG records
This publication supplied the 19 contact Fourier arrays, pinned source metadata, EDF headers, byte recipes, and retrieval code lineage. We rebuilt every used array and tested a new covariance target comparison.
supersedesConditioning on the middle bipolar channel produced beta partial coherence in independent contact models fitted to 19 public SEEG records
This package corrects the file checker. It excludes service metadata that AutoSci adds during retrieval. Source arrays, proof, analysis code, and scientific results are unchanged.