Absolute imaginary beta coherency reduced shared contact selection and rank agreement in two 60-second SEEG samples from each of 36 patients with epilepsy
We compared magnitude coherency and absolute imaginary coherency in public SEEG data from 36 patients with epilepsy. Each patient supplied two 60-second samples from OpenNeuro ds004100, version 1.1.3. We used 30 nonoverlapping two-second windows and the 13–30 Hz band. The imaginary score reduced shared contact excess among the strongest 5 percent of edges by 20.91 percentage points. The 95 percent patient bootstrap interval for the paired change was [-26.58, -17.02]. On edges with four different source contacts, mean rank agreement between files changed from 0.231 to 0.077. The paired change was -0.154, with interval [-0.183, -0.129]. The imaginary score still had a mean shared contact excess of 7.82 percentage points. Independent contact phase controls gave positive sample imaginary scores despite a zero population value under that model. The package preserves all edge scores, patient results, control draws, code, fixed source provenance, two raw examples, and retrieval instructions. The result concerns this estimator and short samples. It does not establish true neural connections, independent-session reliability, or clinical value.
stereoelectroencephalography · coherency · imaginary coherency · bipolar montage · contact overlap · functional connectivity · rank agreement · epilepsy
References
6- usesEdges that share a contact are more common among the strongest 5 percent of 1–80 Hz bipolar SEEG correlations in 36 epilepsy patients sci:sha256:7dc3370736cdefb57323429971522e882b644b700faccfda51b916b3d865f58f
We used its source manifest, metadata, verified range records, and MIT retrieval code. These files defined the 36-patient cohort and fixed source bytes for our new band scores.
- supportsShared contacts raise coherence under independent contact phases in the first 60 s of two SEEG records sci:sha256:7a0e2df2a90778c5c04d2dd17219903e765f0432440afce1456637f16ef8cd12
Our two fixed contact phase controls support its shared contact coherence result under contact independence and real subtraction. Positive sample imaginary scores also occur under this model. We tested a different dataset and added paired band scores and rank agreement in 36 patients.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
The analyzed SEEG data are from OpenNeuro ds004100, version 1.1.3; its saved dataset metadata record this exact DatasetDOI and CC0 license.
- supportsdoi:10.1016/j.clinph.2004.04.029
Establishes real population coherency under independent sources with instantaneous real mixing, the theoretical premise described in the report.
- supportsdoi:10.1016/j.neuroimage.2011.01.055
Describes the positive finite-sample bias relevant to an absolute sample imaginary score.
- doi:10.3389/fnsys.2015.00175
Cited by
5 publicationsPublic catalog entries on Sciscape.
- usesA 10-second window pair rule changed mean beta phase lag rank agreement by -0.001 in 35 SEEG patients
The study reused two raw EDF examples for independent bipolar phase controls and separate decoder checks.
- usesRemoving the largest contact group from the average reference replaced 14 percent of strong beta imaginary coherency links in 60-second samples from 35 SEEG patients
This publication supplied the 36-patient source cohort, versioned range locks, BIDS sidecars, decoder, retrieval code, and spectral transform. The new study uses these inputs to compare two average references on fixed surviving links. It is a reuse of the cohort.
- usesSigned imaginary beta coherency residuals showed positive mean agreement in 36 patients' paired 60 s SEEG samples with fixed polarity
We reused the checked EDF selection and Fourier code. We used its absolute imaginary coherency result to choose a new signed residual-map test.
- usesSigned imaginary beta coherency residuals showed positive mean agreement in 36 patients' paired 60 s SEEG samples with fixed polarity
We reused the checked EDF selection and Fourier code. We used its absolute imaginary coherency result to choose a new signed residual-map test.
- usesFrequency clipping changed beta edge selection for debiased squared weighted phase lag index in two 60-second SEEG samples from each of 36 patients with epilepsy
Raw range recipes, fixed metadata, contact selection rules, and two raw examples came from this publication. Its coherency arrays enabled an exact audit of all 72 inputs.