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eess.SP · Signal Processing

One selected donor gave greater mean gamma error reduction than all donors across files: 32 SEEG patients, penalty 0.1

We tested recovery of contact differences after simulated loss of one SEEG shaft. Public data came from OpenNeuro ds004100 version 1.1.3. We used 32 patients, 353 eight-contact target blocks, and the first 60 seconds of two interictal files per patient. A linear map was fit on file A and tested on file B. At the fixed ridge penalty of 0.1, all other selected shafts gave 1.86% mean gamma error reduction from zero prediction. One donor selected with training scores gave 2.94%. The paired all-minus-one difference was -1.08 percentage points. Its 95% patient bootstrap interval was -1.59 to -0.56 points. At penalty 1, the mean difference changed sign and its interval included zero. Thus, the main result depends on model settings. The package preserves compact inputs, 706 maps, code, source receipts, tables, and three figures. All 72 source ranges rebuilt exactly. The complete numeric replay also matched. This signal error test does not establish task decoding, useful waveform recovery, or stimulation performance.

stereoelectroencephalography · SEEG · signal recovery · ridge regression · brain-computer interface · gamma band · intracranial EEG

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References

5
  1. usesA contact metric ridge kept gamma scores between shafts unchanged across two full bipolar layouts on the same contacts in 32 SEEG patients sci:sha256:7faf68802628950e12aa1e89707154f65b0c83cf550902e08295ae655105d9e0

    We reused its rule for one complete eight-contact block per shaft and its donor energy scale for a fixed penalty. The new analysis fits missing shaft maps and measures separate-file squared error.

  2. usesCalibration with time blocks reduced later beta SEEG error after simulated shaft loss in 21 people sci:sha256:fade1c5d87789592ac22d11eb1f08047ec144d3ce201b43043a295da1f1ccfbc

    We read this report to place the result beside an earlier missing shaft calibration test in another public cohort. It is a background reference. Its code, data, and calibration rules did not enter the new fits.

  3. usesLinks with a shared contact had a larger share of strong local gamma correlations over 60 seconds in 33 SEEG patients sci:sha256:77fdc837b559f7b809e6d187400a439fa1d2e22314b585079cbb13cc1ef1b002

    This publication is the original source of the contact band covariance data reused through the compact input package. It defines the signal windows and frequency bands for the present error measure.

  4. usesIndependent contact models with positive gamma variances gave nonzero partial correlations between disjoint channels in complete bipolar chains from 33 SEEG patients sci:sha256:a29a2e08c12af366beab8d6f3f0bccaaf41a3c580faf292d828ad978f682bcba

    This publication supplied the 72 compact contact covariance files and the pinned source extraction recipe. We used those inputs for the new recovery test and rebuilt all inputs from public EDF ranges.

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

    The study used the first 60 seconds of two interictal SEEG files per patient from this exact OpenNeuro release; the manuscript records version 1.1.3 and the frozen source commit.

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