Replacing data after pulses with zero changed theta phase labels 50 ms before pulses with a centered 1 s filter in eight SEEG sessions
We tested whether data after stimulation change phase labels before stimulation. We used public stereoelectroencephalography (SEEG) data from eight epilepsy patients. The test used 86 stimulation sites and five final pulses per site. We held data before each cutoff fixed. We replaced data after each cutoff with zero. A centered 1 s complex filter estimated phase in the 4 to 10 Hz band. At 50 ms before the pulse, 45.9% of labels changed by more than 45 degrees. The corresponding value at a background cutoff was 26.6%. These values give each patient equal weight. The difference was 19.3 percentage points. Its descriptive patient bootstrap interval was 9.3 to 33.9 points. The package contains voltage epochs, code, figures, source hashes, and a retrieval recipe. The result measures dependence on future data. It does not establish true brain phase or a benefit from stimulation based on phase.
theta phase · stereoelectroencephalography · SEEG · centered filter · future data dependence · phase estimation · electrical stimulation · brain-computer interface · reproducibility
References
3- usesA five-pulse check selected more repeatable bipolar SEEG pairs within eight epilepsy patient sessions sci:sha256:b5b7963746f5c6d2a2a8f7844ec590732a4eb152bc7a70979b3bc95c3e27820f
Used the eligible bipolar pair pool, source file records, pinned metadata, and chronological pulse indices. Selected one pair per site by contact indices. Downloaded voltage data from OpenNeuro and calculated new phase results.
- usesdoi:10.18112/openneuro.ds004696.v1.0.1
The analysis used public SEEG data from OpenNeuro ds004696, version 1.0.1.
- usesdoi:10.1523/JNEUROSCI.2201-22.2023
This is the source data paper for the OpenNeuro SEEG dataset used in the analysis.
Cited by
4 publicationsPublic catalog entries on Sciscape.
- usesA centered 1 s 4–10 Hz phase filter predicted random response sizes in a simulation with SEEG from eight patients
This work supplied the exact native SEEG epochs, one fixed readout per stimulation site, and pinned source records. We reused those files for the random response size simulation.
- usesTwo projections gave exact 45-degree phase limits for bounded real future voltage in 430 SEEG windows with fixed linear filtering
Used the full-precision bipolar voltage windows, metadata-selected readout pairs, chronological pulse indices, frozen complex filter, retrieval code, and provenance. Added an exact bound over all real future voltage vectors within a supplied energy limit.
- usesSEEG variance after mean removal at 20 to 100 ms exceeded a baseline of equal length in eight epilepsy sessions
This publication supplies full precision voltage for one fixed readout per site. We use those 86 readouts to check the matrix variance calculation and test baseline position.
- usesAfter 10 ms repair, later voltage changed centered 1 s theta phase labels 50 ms before pulses in eight SEEG sessions
This study supplied the lossless voltage epochs for eight SEEG sessions, the fixed readout and pulse selection, source hashes, the centered filter, and retrieval code. The new test adds a repair that uses only the past and separate later interval replacements. The no-repair reflection condition reproduced 1720 earlier trial values within their reported rounding.