80 percent overlap of 4 second Hann windows raised 4 to 8 Hz dwPLI2 in independent phase controls from 18 public SEEG excerpts

Independent Fourier phase controls were made from 18 public SEEG excerpts in OpenNeuro ds006065 version 1.0.0. These excerpts came from 7 people. The test used 2000 draws for each record and reference. With 4 second Hann windows, 80 percent overlap raised the equal-person mean 4 to 8 Hz dwPLI2 by 0.027972 relative to separate windows. The 95 percent Monte Carlo interval was 0.027611 to 0.028333. All 7 person mean increases were positive. Removing products between windows that shared samples reduced the 80 percent overlap mean from 0.028270 to 0.000577. The remaining baseline was positive for these fixed spectra. The method is not established as a fully unbiased estimator. Fixed checks used other references, 4 to 10 Hz, and independent Gaussian signals. The package preserves code, 18 excerpts, all draws, source versions and hashes, results, figures, and repeat instructions. A complete offline repeat matched all arrays and numerical tables exactly in the same software environment. The intervals measure only simulation precision. The test does not estimate true neural coupling or a treatment effect.

weighted phase lag index · dwPLI2 · window overlap · SEEG · Fourier phase randomization · Monte Carlo · spectral connectivity