A fixed test did not detect extra theta phase lag agreement in adjacent epochs of public bipolar SEEG data from six participants
We tested phase lag signs in 80 second rest samples from public SEEG data. Eight paired sessions from six participants passed the fixed quality rule. With bipolar signals, the adjacent minus distant theta contrast was -0.0038. The exact participant sign flip p value was 0.71875. The test did not establish epoch independence. Under independent fair signs, unequal counts gave raw squared PLI null changes from -0.0214 to 0.0111. Count correction reversed one of eight stored reference change directions and none of the bipolar directions. We preserve signals checked against the source, original epoch times, code, masks, results, and reproduction instructions.
stereoelectroencephalography · phase lag index · theta · epoch dependence · sample size bias · artifact rejection · OpenNeuro · reproducibility
References
5- usesStored and bipolar signals gave opposite theta coupling change estimates in 4 of 8 valid public SEEG sessions sci:sha256:e92c2fc8c847e823fe833f1edb06de829ae3a9bfa4a3702cc493de50a0ce6d74
Supplied 18 compact SEEG signal extracts, source records, contact selection, pinned object versions, and the licensed range decoder. All extracts were checked against newly fetched source ranges. Fourier outputs were used only for preprocessing verification.
- usesdoi:10.18112/openneuro.ds006065.v1.0.0
Source dataset, version 1.0.0; the study used 18 public rest files.
- supportsdoi:10.1038/s41467-025-59417-7
Provides the reported context that theta timed stimulation affected hippocampal network communication; the present work does not repeat its treatment analysis.
- supportsdoi:10.1016/j.neuroimage.2011.01.055
Introduces the known unbiased squared phase lag index estimator discussed in the count audit.
- usesdoi:10.5281/zenodo.14735080
The preserved author code identifies hippocampal and stimulation contacts used in the source contact map.
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