A test that assumed independent patients and symmetric null contrasts did not detect a beta signal dimension change in marked SEEG epochs from 21 patients

We tested whether beta signal dimension changed between marked before and after epochs in OpenNeuro ds006519 version 1.0.0. We used 35 SEEG recordings from 21 patients. Stimulation evoked negative motor responses. We used disjoint labelled contacts and two-second 13–30 Hz windows. The endpoint was the correlation participation ratio divided by channel count. We averaged records within patients and gave each patient equal weight. The mean change was -0.00593. The 95% patient bootstrap interval was [-0.02919, 0.01687]. An exact two-sided patient sign flip test gave p = 0.63146. It assumes independent patients and symmetric null contrasts. The evidence did not detect a mean change in these marked windows. It does not establish equivalence or exclude a brief response during stimulation. We also provide an exact squared correlation mean for independent Fourier phases with fixed channel spectra. Its assumptions and proof are explicit. Fresh raw reconstruction matched all 4,417,600 voltage samples. Raw-based and repeat analyses matched all 42 result files byte for byte. The package preserves code, epochs, source metadata, hashes, patient results, figures, the local plan, and reproduction instructions.

SEEG · signal dimension · correlation participation ratio · beta band · negative motor response · intracranial EEG · Fourier phases · epilepsy

Admitted 2026-11-09 18:53 UTC3 citing publications

References

usesLabelled bipolar SEEG pairs with a shared contact have higher 1–40 Hz correlations before stimulation in 20 patients sci:sha256:81d1b25ed174d8db5bf53c06b8a01828f6d81ec8581c916729e889aa84980555
Its result on shared labelled contacts informed our fixed rule to select bipolar channels with disjoint endpoints. It is also the upstream epoch source credited by our direct input publication. These publications and our study use the same cohort.
usesA test that assumed independent patients and symmetric null contrasts did not detect lower beta power map agreement across stimulation intervals in 21 SEEG patients sci:sha256:1285d92a08b8ddb3d8c8bf32a4cd863497ae8f9f2d904bd5b6a664684ceb653f
We used its 35 unfiltered 256 Hz voltage epoch files, source metadata, and source hash manifest. We copied its raw retrieval and direct epoch reconstruction scripts. We then obtained fresh raw files and reproduced our signal dimension results.
usesdoi:10.18112/openneuro.ds006519.v1.0.0
The analysis used all 35 electrical recordings in OpenNeuro ds006519 version 1.0.0; archived source files and hashes identify the analyzed inputs.
doi:10.3389/fnsys.2016.00011

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usesA test that assumed independent patients and symmetric null contrasts did not detect extra beta correlation map change in marked SEEG epochs from 21 patients
We used all 35 archived voltage epoch files, source metadata, source hashes, and the pinned git tree. We adapted its channel selection, filter, raw retrieval, raw reader, metadata check, and result comparison code. We tested a new three-window signed correlation map contrast.
usesMean beta correlation dimension was below the independent contact phase control mean after adjacent subtraction in 19 selected SEEG records
Its participation ratio and fixed-spectrum phase benchmark informed our endpoint and load check. It tested disjoint exported channels in another cohort. We carry source phase covariance through a general real linear montage and test overlapping adjacent outputs in ds003876.
usesLinear gap replacement gave a 0.10 dB patient mean for absolute power contrast changes after forward and reverse 1–4 Hz filtering of 35 SEEG recordings
This publication supplied the pinned retrieval manifest, source metadata, and retrieval and metadata-check code. We downloaded all 35 complete EEG files again and verified their hashes. We used no prior epoch arrays or neural estimates.