Removing adjacent Laplacian edges leaves excess beta coherence under independent contact phases in controls from nine SEEG patients
An adjacent-center mask leaves shared contacts in a three-contact Laplacian SEEG montage. We tested this rule with public OpenNeuro ds004100 version 1.1.3 data from 12 fixed patients. Nine patients had suitable channel pairs two contact numbers apart. Independent contact phases kept the measured Fourier amplitudes. A paired output phase control kept the same output periodograms. All nine patients had higher beta magnitude-squared coherence in the contact control. The mean difference was 0.027740. The 95 percent patient bootstrap interval was 0.025750 to 0.029857. The exact two-sided sign-test P value was 0.00390625. An adjacent-center mask left 351 shared-contact Laplacian pairs. A mask based on actual contact support removed all these overlaps. The proof assumes zero cross-spectra between distinct input contacts. These conditional controls do not measure false connections in recorded brain activity. The package preserves code, derived inputs, all control draws, source hashes, a raw retrieval recipe, and repeat instructions.
stereo-EEG · SEEG · Laplacian montage · magnitude-squared coherence · contact support mask · phase randomization · spectral controls
References
4- usesContact power improved shared-contact correlation predictions in phase-randomized SEEG from 12 patients sci:sha256:4bdd0a0f000322f4971fbab57ca3585e15ce99f92dabd5fdf6266e2eef19721c
This study uses the fixed 12-patient cohort, source metadata, pinned S3 versions, range hashes, and an adapted EDF reader. All Fourier inputs and numerical results were built again from raw source ranges. Prior analysis arrays and numerical results were not used.
- usesShared contacts raise coherence under independent contact phases in the first 60 s of two SEEG records sci:sha256:7a0e2df2a90778c5c04d2dd17219903e765f0432440afce1456637f16ef8cd12
This study uses the paired spectral control design: independent contact phases followed by independent output phases with the same output amplitudes. It applies this design to a three-contact Laplacian montage in another dataset. Prior code and result arrays were not used.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
The study analyzed interictal run-01 recordings from the 12 fixed patients in OpenNeuro ds004100 version 1.1.3.
- doi:10.1093/braincomms%2Ffcae165
Cited by
1 publicationPublic catalog entries on Sciscape.
- usesIndependent contact models of SEEG spectra from 12 patients gave unequal ten-sample prediction gains in shared-contact bipolar pairs
This publication supplied the fixed 12-patient cohort, source metadata, pinned raw range identities, and adapted EDF reader.