Separate one-second windows did not establish repeatable local beta power changes around motor stimulation in 21 SEEG patients

We tested whether local beta power changes around motor stimulation repeat in separate one-second windows. We used all 35 released EEG records from 21 patients in OpenNeuro ds006519 version 1.0.0. The test multiplies early and late log-power change maps after removal of the mean change across channels. The equal patient mean local repeat product was 1.51 dB². Its 95% patient bootstrap interval was −0.41 to 4.35 dB². The exact two-sided sign-flip test gave p = 0.275 under independent patients and symmetric null score distributions. Nine patients had positive scores; twelve had negative scores. Mean map correlation was 0.065. Large ordinary squared changes mainly appeared as early–late disagreement. Only 16.3% of early changes of at least 3 dB met the same magnitude and sign rule later, after record and patient averaging. Fixed checks also left wide intervals. The results do not establish absent responses or a causal stimulation effect. The method has a squared-change interpretation only under stable states, zero-mean errors, and zero cross-pair error covariance. Model checks and independent Fourier calculations passed. Fresh source extraction matched all 280 event arrays exactly. The package preserves code, input data, source hashes, retrieval instructions, all results, and four figures.

stereoelectroencephalography · beta power · repeatability · motor stimulation · brain-computer interfaces · intracranial EEG

Admitted 2026-11-09 18:01 UTC4 citing publications

References

usesBeta power ranks have higher agreement than beta network strength ranks between 3 s baselines in eight SEEG patients sci:sha256:dd8a1ee586c1a7276d197e8b391188542f3b8a9603e2240b0f58a49961c495b7
Its baseline power-rank result motivated the question of whether a channel power change map also repeats. Stable baseline ranks do not establish stable response changes. No arrays or code were imported from this publication.
usesA paired test did not detect excess beta network change around motor stimulation in one-second SEEG windows from 21 patients sci:sha256:a8878fd5b39aaaf4da3c243976744a77e32bbf6f37940f59c9e4af5d310615ea
Its paired network test informed the separation of repeated change from ordinary squared change. This study applies a related product principle to centered log-power changes. It tests a different endpoint. No arrays or code were imported from this publication.
usesA paired beta-power test gave an inconclusive result in 21 SEEG patients sci:sha256:3f006c92ccc74bee13d39aed711d3128c41562201ec248fe8bb808843180ece5
Its beta power drift test informed the new question about repeatability of channel-specific changes. Its size endpoint does not test the centered product of separate change maps. No arrays or code were imported from this publication.
usesBipolar SEEG pairs with a shared contact have higher mean absolute beta correlation than the nearest pairs with separate contacts in 21 patients sci:sha256:f9206e6467700c572ec5f73a7622ca0b4d27200ce928e5b1393ab3a0c47567c8
This study imports its 35 verified event files, source manifest, source metadata, contact parser, and retrieval and extraction code. Fresh extraction from the public source reproduced all 280 stored arrays exactly. The new endpoint measures early and late local log-power change agreement.
usesdoi:10.18112/openneuro.ds006519.v1.0.0
Analyzed public SEEG records and source metadata from OpenNeuro ds006519 version 1.0.0; the publication records file sizes and SHA-256 checks.
doi:10.1016/j.neuroimage.2026.121822
doi:10.1016/j.neuroimage.2015.12.012

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4 publications

Public catalog entries on Sciscape.

usesWith separate pre windows, zero gave lower mean high gamma forecast error than full or half early changes in 21 patients
We read its separate-window beta power test before the new scores. It supplied design context for the fixed one-second window test in this reused cohort.
usesEarly half-rate fits did not establish a median-channel beta prediction gain over pre-stimulation in seven SEEG patients with about 43 Hz stimulation
We used the frozen ds006519 v1.0.0 source file manifest and raw retrieval code. These supplied source URLs, sizes, and SHA-256 values for 355 files. We did not reuse its extracted voltage, beta feature tables, or endpoint results. We made a new during-stimulation half-rate prediction test.
usesA fixed detector found periodic voltage runs in 31 of 35 SEEG records from ds006519 version 1.0.0
This publication supplied the exact ds006519 version 1.0.0 source manifest, original recording and event metadata, and a prior event-field audit. These files enabled pinned source retrieval and a complete recording list. We wrote new detector code and analyzed native voltage. We did not use its resampled analysis arrays or beta-power results.
usesDirect transfer of centered remote beta power change maps increased error between neighboring stimulation sites in six SEEG patients
The within-record beta repeat test motivated the separate early and late windows and centered maps. This study uses the same public cohort and tests a distinct endpoint: direct transfer between neighboring stimulation records. Its primary spectral estimator differs.