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q-bio.NC · Neurons and Cognition

Separate trial maps did not show a mean beta and high gamma relation within shafts in eight SEEG patients under independent, symmetric null scores

We tested the spatial relation between beta and high gamma power changes near a keypress. We used 511 trials and 819 adjacent contact pairs from eight public SEEG patients. The two band maps used separate early and late trial halves. We compared locations within electrode shafts. The mean correlation was 0.0375. The descriptive 95% patient bootstrap interval was -0.0625 to 0.1360. The exact two-sided sign flip test gave p = 0.5000 under patient independence and null sign symmetry. The test did not detect a mean relation. It did not establish that the two signals have separate neural sources. Map repeat correlations were modest: 0.2647 for beta and 0.2802 for high gamma. The package supplies all pair maps, trial splits, features, code, and source records. A fresh raw reconstruction matched all eight feature sets and all 512 signal-range hashes.

stereoelectroencephalography · SEEG · beta power · high gamma · spatial maps · trial splitting · electrode shafts · movement task

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References

5
  1. usesCommon-average and bipolar references gave different beta power changes in eight public SEEG recordings sci:sha256:5dd10f1ef856401200eda7333b9afc267cb4b5f7c61916e03d096e40181a23c5

    The EDF helper code and its MIT license come from this work through the input package. The helper reads fixed raw ranges and computes contact, trial, signal, and spectral inputs.

  2. usesA fixed bipolar beta test did not detect a mean keypress timing gain across blocks in eight SEEG patients under independent and symmetric null patient gains sci:sha256:2fc5b2dc90369d724a0bd99bb2e44bed27d6ff4350a603ea59a11362adfaf27a

    This work supplies the complete 511-trial feature cohort, extraction code, fixed source metadata, and raw range hashes. We rebuilt every feature from the public signals. We use a new spatial map test with separate trial halves.

  3. usesShared trial baselines produce positive beta to high gamma log power correlations under independent response sampling in eight SEEG recordings sci:sha256:4a146eb0268a4abf6b2167cc46b61856afd37dd0b960000cda2b22d5d6b6ac89

    Its shared-baseline control model motivated the use of separate trials. The present endpoint compares spatial maps. Its numerical data are not inputs to this analysis.

  4. usesdoi:10.18112/openneuro.ds004473.v1.0.2

    The study used this exact OpenNeuro dataset version for the SEEG signals and metadata.

  5. doi:10.1088/1741-2552%2Facae0a

    The source dataset README cites this article; its reported movement-related spectral patterns motivate the question. The article names ds004085 in its data statement, while this study uses ds004473.

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