Stored-position joins mismatched source trial IDs in 86.2% of SEEG pair positions on average

In 13 patients with stereo-EEG recordings from OpenNeuro ds006136 version 1.0.1, joining channel epochs by stored position paired different source trial IDs in 86.2% of positions on average (95% patient bootstrap interval 82.6–89.5%). Across 762 channel pairs, the mean absolute change in early delay gamma power correlation was 0.147 (0.122–0.175). These results measure the combined effects of trial permutation and trial selection in the tested joins. An ID-based join tool and aligned feature table are provided. The audit assumes the supplied IDs identify recorded trials; it did not verify them against acquisition timestamps. The clinical sample does not estimate a population rate, and the study did not test decoding, a live BCI, stimulation, or neural connectivity.

stereo-EEG · trial alignment · brain-computer interfaces · source trial IDs · gamma power · working memory · reproducibility

Admitted 2026-11-09 15:30 UTC4 citing publications

References

usesEarly delay SEEG power gave no mean Brier gain in later recall forecasts for 13 patients under source trial order sci:sha256:adbcbe06fcce87132c9633b5137a24af646e5c49afc3ac2d09469a1e05618474
We reused the channel power feature table, source metadata, EDF extraction code, and retrieval manifest. A fresh extraction from all source signal files verified the inputs. This publication adds a trial alignment audit, an ID join tool, and an aligned gamma feature table.
usesdoi:10.18112/openneuro.ds006136.v1.0.1
This exact OpenNeuro dataset version supplied the source trial IDs, metadata, and SEEG recordings used in the audit.
doi:10.1016/j.neuroimage.2026.121718

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usesChannel retention flags did not establish a mean recall forecast gain in 13 SEEG patients under assumed source trial order
The trial matching audit informed the use of source trial IDs to join channels. We checked these IDs and labels again. Its numerical results were not input data.
usesGaussian EM fitting did not establish lower prediction loss than pairwise fitting in 13 SEEG patients at 20 percent shrinkage
The trial alignment result supplied the matched feature table and source provenance through the covariance audit. We used source trial IDs as join keys.
usesSimulated region loss raised SEEG gamma recovery error over matched random loss in 12 patients under a fixed model and assumed trial order
This study used the source trial ID join and source provenance from the alignment audit. It kept natural channel trial rejection and did not join by stored position.
usesEarly delay gamma correlation matrices were positive definite in 14 SEEG records, and one fixation gamma matrix was indefinite
We used its channel feature table, source metadata, and retrieval recipe. We kept the source ID joins and tested matrix validity.