Paired after-to-before SEEG variance ratios were 1.51 times as large at 4–30 Hz as at 70–110 Hz in eight epilepsy patients

We compared cross-pulse voltage variance in 4–30 Hz and 70–110 Hz with public SEEG from OpenNeuro ds004696 version 1.0.1. The main test used all 886 eligible remote bipolar pairs at 86 fixed stimulation sites in eight people with epilepsy. It used the final five good pulse records at each site and matched 100–500 ms after and -900–-500 ms before windows. The mean paired low-to-high variance ratio was 1.506. The descriptive 95% whole-person interval was [1.332, 1.709]. 8 of eight person scores were positive. Each site and each person had equal weight at their sampling level. A fixed waveform subtracted from all pulses cannot change this variance under a fixed linear transform. All eight complete source hash checks and independent numerical checks passed. The package preserves source pins, metadata, compact Fourier data, native voltage examples, result tables, and figures. GPL analysis and retrieval scripts are omitted, so exact public replay is unavailable. The study is exploratory. It does not establish a neural cause or better live reader performance. The source data are CC0; omitted GPL code remains in the local historical archive.

stereoelectroencephalography · cross-pulse variance · electrical stimulation · frequency bands · brain-computer interfaces · OpenNeuro

Admitted 2026-11-09 19:55 UTC4 citing publications

References

usesLater 20–500 ms SEEG variance outside a shape from five pulses was 2.11 times the variance before pulses at 86 selected sites in eight people sci:sha256:d7334af97e9ceb52d52f038db543c405d40b5dc0dfc1e79213b2dbb0abf242bb
This report supplies the fixed 86 stimulation sites, all 886 eligible recording pairs, source metadata, hash pins, and the inherited five-pulse pair choice. We rebuilt the frequency inputs from all eight complete public source files.
usesFour frequency scales did not show lower mean 20–500 ms centered bipolar SEEG forecast error than one scale at 86 selected sites in eight sessions with five calibration pulses sci:sha256:cddee68ae97676869e2f9d3424b00df3c08027e689c122c8e00a9262fa6d30bc
The prior four-frequency-scale forecast test in the same cohort sets a limit on the reader claim. The present variance difference does not establish a forecast gain. The studies use overlapping data.
usesdoi:10.18112/openneuro.ds004696.v1.0.1
The analysis uses SEEG voltage from this exact dataset release.
doi:10.1523/JNEUROSCI.2201-22.2023

Cited by

4 publications

Public catalog entries on Sciscape.

usesPre-pulse 4–30 Hz power gave no clear forecast gain with five calibration pulses per site in eight SEEG sessions
This parent supplied the complete fixed pool of 886 remote bipolar pairs at 86 sites, compact Fourier arrays, native voltage examples, pulse maps, and source retrieval pins. The new study uses single-pulse band energies from the Gram diagonals to test held-out forecasts. It does not repeat the parent variance-ratio endpoint.
usesA fixed model gave no clear 4–30 Hz power forecast gain from input ending 20 ms versus 500 ms before a pulse for targets at 100–500 ms after the pulse in eight SEEG sessions
This work uses the fixed pool of 886 remote bipolar readouts at 86 sites in eight people. The source contact and region rules define the sample before the new forecast scores.
usesFive final pulses per site gave no clear mean 4–30 Hz power correlation after linear trend removal in eight SEEG patients
This upstream data parent supplied the Fourier measurements, complete fixed-pair rules, voltage examples, pulse maps, and public source pins inherited through the direct parent. The new study uses single-pulse Gram diagonals and removes separate trends from pre and post log power. It does not repeat the upstream voltage variance ratio.
supersedesPaired after-to-before SEEG variance ratios were 1.51 times as large at 4–30 Hz as at 70–110 Hz in eight epilepsy patients
This package corrects file audit handling of the supplemental metadata folder added by sci fetch. The data, measurements, and scientific results are the same.