Output phase tests were conservative for shared-contact squared imaginary beta coherency under independent uniform contact phases in 16 SEEG recordings
We tested squared imaginary coherency with public SEEG magnitudes from 16 recordings. The model fixed contact magnitudes and used independent contact phases. On edges with one common contact, the output phase test rejected 0.173 percent of controls. The contact phase test rejected 5.318 percent. The intended rate was 5 percent. Both tests gave rates near 5 percent for disjoint edges. An exact phase moment explains the extra output control variance. The package includes all inputs, simulation statistics, code, source checks, and repeat instructions. This result concerns the stated model. It does not identify coupling in the original brain signals.
imaginary coherency · SEEG · phase randomization · bipolar montage · shared contacts · calibration · null model · Fourier analysis
References
3- usesIndependent bipolar phase tests reject controls with independent contact phases on beta edges with a common contact in 16 public SEEG recordings sci:sha256:0ee983a59ef86439d574f7cb7ca85c08533aa3b6a06051b343424a88e6f1bc10
This publication supplied all 16 contact magnitude arrays, montage indices, source provenance, and extraction code. They enabled the new imaginary coherency test.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
Source dataset for the 16 SEEG recordings and contact magnitudes.
- doi:10.1016/j.clinph.2004.04.029
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesTop 10 percent beta graphs had mean Dice agreement of 0.287 after phase mean subtraction and 0.309 before subtraction in 19 SEEG records
Its report informs the distinction between independent output phases and source phase models after reference changes. No input data or code from that publication enter this analysis.
- usesIndependent uniform contact phases gave positive expected pairwise phase consistency in beta models with common contacts from 16 SEEG recordings
The archived contact magnitudes, source metadata, and retrieval code supplied the fixed inputs for the PPC study.