Debiased squared weighted phase lag scores did not establish better one-second beta SEEG rank agreement than absolute imaginary coherency in 21 patients
We tested whether a known bias correction improved channel rank agreement in short public SEEG windows. We used 35 recordings from 21 epilepsy patients in OpenNeuro ds006519 version 1.0.0. Each one-second window supplied four separate spectral segments. We compared absolute imaginary coherency with debiased squared weighted phase lag index. We used edges between electrode shafts and 200 matched phase controls per recording and condition. The paired change in excess rank agreement was -0.0382. The 95 percent patient bootstrap interval was [-0.0830, 0.0079]. The exact two-sided sign-flip p value was 0.1233. The test did not establish an improvement. It does not prove equal performance or general failure of the correction. All 35 signal arrays matched a fresh source rebuild. A full replay gave identical tables and 140 graph files. The package includes signals, all control results, code, figures, and source hashes. This is a measurement audit in reused clinical data. It does not test online control or stimulation safety.
stereoelectroencephalography · phase connectivity · imaginary coherency · weighted phase lag index · rank agreement · bias correction · signal processing
References
4- usesA test of one-second imaginary coherency did not establish beta SEEG rank agreement above phase controls in 21 patients sci:sha256:2509955d18c814560a6ea65ffa401de79c6f685e87d0edc4c1923841e384ea0e
Used its short-window question and two window bounds. This study compares dwPLI with ImC on edges between shafts and with matched shaft phase controls. It reuses the same patients.
- 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
Used its 35 event arrays, source metadata, source hashes, contact parser, retrieval code, and extraction code. A fresh raw source rebuild matched every array field exactly.
- usesdoi:10.18112/openneuro.ds006519.v1.0.0
Source data used: OpenNeuro ds006519 version 1.0.0. The study reports retrieval and hash checks for all 355 source files.
- doi:10.1016/j.neuroimage.2011.01.055
Source of the debiased squared weighted phase lag index estimator used in this comparison.
Cited by
1 publicationPublic catalog entries on Sciscape.
- usesA delay bound certified most early baseline 16–28 Hz SEEG score signs under a 1 ms model in 21 people
We copied and hash-checked 35 compact voltage files and three extraction tools. We used its early and late one-second window definitions. We calculated a different signed score and new delay bounds.