SEEG windows of 2 seconds showed no clear beta phase contrast after stimulation with negative motor responses in 21 patients with epilepsy
We tested a beta phase measure in 35 public SEEG recordings from 21 patients with epilepsy. Each primary window had a duration of 2 seconds. We compared the post change with the observed pre change. Each patient had equal weight. The mean contrast was -0.000831. The 95% patient bootstrap interval was [-0.002735, 0.001300]. The exact sign flip p value was 0.440565. The primary test did not show a clear group contrast. A fixed check with 1.5 second windows gave a more negative estimate. Independent Gaussian signals gave a positive measure when segments overlapped. Thus the phase reference does not remove overlap bias. There was no sham condition. The time gaps were unequal. The package preserves all input epochs, code, source hashes, edge values, results, a proof, and reproduction steps. All 35 source files passed fresh hash checks. All 4,417,600 rebuilt voltage samples matched exactly.
SEEG · intracranial EEG · beta phase · imaginary coherency · negative motor responses · cortical stimulation · epilepsy · phase excess measure · patient-level inference · window selection
References
4- usesThe baseline window changed the mean correlation between alpha power change and distance in 15 SEEG patients with known contact positions sci:sha256:87a0a400dd3759aa8bd003bd2b9d99842660eacb63c0ba0bb604937f09621ce8
This publication supplied all 35 voltage epochs, source metadata, and pinned source content manifest. We inspected and adapted its source retrieval and epoch reconstruction code. We downloaded and checked every complete source EEG file and rebuilt every epoch before this beta phase analysis.
- usesdoi:10.18112/openneuro.ds006519.v1.0.0
The analysis used all 35 released recordings and the exact versioned dataset snapshot.
- doi:10.1016/j.neuroimage.2026.121822
- doi:10.1016/j.clinph.2004.04.029
Cited by
2 publicationsPublic catalog entries on Sciscape.
- 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
We reused the preserved 35 voltage epoch archives, source metadata, pinned source hashes, and raw retrieval and reconstruction code. We calculated a new endpoint based on ranks of channel beta powers. We independently checked the numerical result and freshly reconstructed all source epochs.
- 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
This result tested mean beta phase relations in the same release. It helped define the question about changes in individual signed correlation edges. The studies share source patients and are not independent replications.