Across 7 people, released and bipolar theta connectivity changes had a median rank correlation of 0.038 in 96 second SEEG rest samples

We compared the spatial pattern of rest theta connectivity change across three electrical references in OpenNeuro ds006065 version 1.0.0. The study used 18 files, nine paired sessions, and seven people. The main sample used the first 96 seconds of each file and nominal 4 to 10 Hz. Connections joined local contact pairs on different leads, at least 30 mm apart. All references used the same accepted connections and windows. The primary measure was debiased squared weighted phase lag index. The median rank correlation between released and bipolar changes was 0.038 across 7 participants. The participant median fraction with the same change sign was 0.513. Each participant first supplied the median across their sessions. Change patterns also had low agreement between separate 128 second time halves in eight sessions. The package preserves all theta coefficients, quality values, geometry, edge results, code, metadata, and a checked raw retrieval recipe. The test describes point estimates. It does not identify true neural connections, a correct reference, or a causal stimulation effect.

theta connectivity · SEEG · electrical reference · dwPLI · phase synchronization · intracranial EEG · reference sensitivity · time variation