Five early response pulses gave lower mean error for later 20–500 ms sample variance in SEEG from eight people

Five early response pulses predicted later response sample variance with less mean squared log error than matched baseline windows. The test used public SEEG from eight people with epilepsy, at 86 stimulation sites and 886 recording pairs. The window was 20 to 500 ms after each pulse. Calibration and target each used five separate good pulses. Mean error was 0.416 for response and 1.130 for baseline. Seven people favored response. A correction from the other seven people gave error 0.956. The result supports local response variance calibration in this recorded protocol. It does not establish live BCI benefit or calibrated confidence bands. The package preserves data products, all scores, two figures, code, source hashes, and reproduction instructions.

stereoelectroencephalography · electrical stimulation · sample variance · variance forecasting · calibration · brain-computer interface · epilepsy

Admitted 2026-11-09 18:17 UTC1 citing publication

References

usesFive-pulse noise scaling reduced later single-pulse error for 20–500 ms centered bipolar SEEG in eight patient sessions sci:sha256:fbc06ab469d48eac7a6f54dd97cd24ccd9c7c5ca4b0db4d64340536b3e81428a
This earlier study supplies the pulse products through the immediate data parent. It tests a mean voltage forecast that uses early pulse variance. The new result measures variance forecast error directly.
usesLarger response energy was linked to greater later variance relative to baseline in 20–500 ms centered bipolar SEEG from eight patients sci:sha256:7ef88a69476e0bd9854c540baecac51983585ede1a7e286d2f771f58df9221b3
This study supplies unchanged pulse products, source metadata, and source-check code. The new analysis tests forecasts of later sample variance.
usesA five-pulse check selected more repeatable bipolar SEEG pairs within eight epilepsy patient sessions sci:sha256:b5b7963746f5c6d2a2a8f7844ec590732a4eb152bc7a70979b3bc95c3e27820f
This study supplies the inherited extraction code and data definitions. They specify adjacent bipolar pairs and separate early and later pulse blocks.
usesdoi:10.18112/openneuro.ds004696.v1.0.1
The analyzed author-produced trial waveforms came from OpenNeuro ds004696 version 1.0.1; the exact-version dataset record identifies this DOI and its CC0 license.
doi:10.1523/JNEUROSCI.2201-22.2023

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usesDonor response covariance gave higher mean 16-mode SEEG forecast scores than background covariance at 86 selected sites in eight people
Uses its variance forecast result to choose local response variance as the common scale control. The covariance shape, selected readouts, and later-pulse endpoint differ.