Independent contact phases give positive beta envelope correlation between bipolar channels that share a contact in eight SEEG recordings
We tested beta amplitude envelopes in eight public stereoelectroencephalography (SEEG) recordings from OpenNeuro ds004473 version 1.0.2. Each recording supplied six fixed samples. Independent contact phases before bipolar subtraction gave a group mean median correlation of 0.231 on shared-contact edges. Independent bipolar channel phases gave about zero. All eight participant differences were positive. The paired difference was 0.231, with a descriptive participant bootstrap interval of 0.228 to 0.235. A fixed-spectrum fourth-moment model described squared-envelope controls with mean absolute error 0.017. The model value is a ratio of expected moments, not an exact mean Pearson correlation. The package preserves beta spectra, source range hashes, new source checks, code, all draw results, proof, and repeat commands. These results test phase controls on the same samples as the cited voltage study. They do not identify neural coupling or clinical value.
stereoelectroencephalography · SEEG · beta amplitude envelope · bipolar channels · phase randomization · shared contact · fourth moment
References
5- usesIndependent contact phase controls give absolute beta correlation above 0.30 on most shared-contact bipolar edges in eight SEEG recordings sci:sha256:b140aa736f880707f1f76cc167a2c578bc877c6ea56ddc6ca389a0996300da69
We used its contact spectra, selected montage, and pinned source records. We added envelope measures and a fourth moment model on the same samples. New source downloads checked the inputs.
- usesdoi:10.18112/openneuro.ds004473.v1.0.2
The analyses use beta spectra from OpenNeuro ds004473 version 1.0.2, as identified in the publication and exact-version source metadata.
- doi:10.1088/1741-2552%2Facae0a
- doi:10.1093/braincomms%2Ffcae165
- doi:10.1038/nn.3101
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesZero-lag regression left small smoothed beta power correlation in independent Gaussian models of eight patients' SEEG spectra
We used this same-cohort envelope benchmark to define the distinction between its instantaneous phase correction and the static real regression tested here. Its numerical results and files do not enter the new calculation.
- State-average joint squared amplitude exceeded a spectral reference in 16 fMRI participants but was uncertain in 56 SEEG patients
Related finite-spectrum fourth-moment and phase-control benchmark in human SEEG.