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q-bio.NC · Neurons and Cognition

Selection from a reused two-second baseline gave a 2.11 dB lower mean alpha score change than earlier selection in 19 visual SEEG patients

We tested how baseline reuse changes a selected SEEG alpha measure. We used OpenNeuro ds005169 and ds006519, both version 1.0.0. Within each shaft, we selected the greatest fixed alpha score from either the change baseline or an earlier period. The main periods were two seconds long. Reused selection gave a mean score change 2.11 dB lower in 19 visual stimulation patients across 89 recordings. The 95 percent patient bootstrap interval was minus 2.47 to minus 1.71 dB. The mean difference was minus 2.01 dB in 17 motor stimulation patients across 30 recordings. An exact decomposition showed baseline selection costs of 2.22 and 2.08 dB. The corresponding post selection terms were 0.11 and 0.07 dB. A one-second control also gave negative differences when all periods came before stimulation. Separate periods do not prove statistical independence. The result measures a procedure difference, not a causal neural effect. We preserve all input spectra, channel choices, code, source pins, result tables, and reproduction instructions. All 119 retained recordings rebuilt exactly from public signal ranges. A full offline repeat gave identical numerical file hashes. This version corrects the environment setup path. Data, analysis code, and numerical results are unchanged.

stereoelectroencephalography · SEEG · alpha score · baseline reuse · channel selection · selection bias · intracranial EEG

Admitted 1 citing publication

References

6
  1. usessci:sha256:a3103708a82d606cb2a89d669d1620f4ed3de12a3e5e104d2e9a188f4a880d58 not known to Sciscape

    This package supplied visual SEEG spectra, primary channel masks, source metadata, fixed source pins, and extraction code. We used them to test baseline channel selection and rebuilt all 89 retained visual recordings from public signal ranges.

  2. usesUnder patient independence and sign symmetry, the fixed alpha contrast test did not detect a mean change in 17 SEEG patients with negative motor responses sci:sha256:631f7e45970072d7da7e52812ae99a11d5093510aee7d9495e1e320ac15f702a

    This package supplied motor SEEG spectra, primary channel masks, source metadata, fixed source pins, and extraction code. We used them for the second descriptive test and rebuilt all 30 retained motor recordings from public signal ranges.

  3. supersedesSelection from a reused two-second baseline gave a 2.11 dB lower mean alpha score change than earlier selection in 19 visual SEEG patients sci:sha256:7e2b9d4af2bcee671528698131b5e96def80e89e36b16315a6d847d5aa562a67

    This version corrects the setup commands to put the virtual environment outside the package. That change keeps the file integrity check valid. Data, analysis code, and numerical results are unchanged.

  4. usesdoi:10.18112/openneuro.ds005169.v1.0.0

    The visual stimulation SEEG dataset, version 1.0.0, supplied the retained spectra and source records for the primary analysis.

  5. usesdoi:10.18112/openneuro.ds006519.v1.0.0

    The negative motor response SEEG dataset, version 1.0.0, supplied the retained spectra and source records for the second descriptive analysis.

  6. supportsdoi:10.1038/nn.2303

    Cited for the general risk of using the same data for selection and inference; this publication measures a specific procedure difference and does not claim to discover that general risk.

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