Beta power maps had positive mean agreement after phase removal and site controls in paired 56-second SEEG excerpts from 35 patients

We tested signed beta power maps from two public SEEG file excerpts for each of 36 patients. The source was OpenNeuro ds004100, version 1.1.3. Each excerpt covered 56 seconds. Links joined adjacent bipolar signals on different electrode shafts. We removed instantaneous phase components and controlled shaft pairs, node effects, and log distance. One patient had too few links. In 35 patients, mean residual map agreement was 0.077. The 95 percent patient bootstrap interval was 0.057 to 0.101. Raw map agreement was 0.099. The paired change was -0.021, with an interval of -0.030 to -0.014. All five fixed sensitivity checks kept positive mean agreement. The source recording time gap is not established. The result does not show a direct neural connection or clinical value. The package preserves code, source versions and hashes, link scores, masks, results, figures, one raw example, and repeat instructions. An offline repeat and separate numerical checks passed.

stereoelectroencephalography · SEEG · beta power · phase removal · functional connectivity · map agreement · epilepsy · signal processing