Five later pulses had 6.5 percent lower SEEG sample variation rank after stimulation than before it at 85 selected sites in eight people

We tested the spread of pulse variation in public SEEG data from OpenNeuro ds004696 version 1.0.1. The test used five later source-good pulses at each of 85 selected remote readouts in eight people with epilepsy. We compared 20 to 500 ms after each pulse with a matched before window. After removal of waveform time means and five-pulse means, sample participation rank was 2.358 after and 2.522 before. The equal-person rank ratio was 0.935, or 6.5 percent lower after stimulation. Its descriptive 95 percent person bootstrap interval was 0.885 to 0.987. Five of eight person ratios were below one. The exact two-sided sign-flip reference gave p = 0.0781. Total sample variance was 2.086 times the before value. Keeping the shared mean gave a much larger rank contrast. The five-pulse sample has at most four variation modes. It does not count neural sources or test future-pulse prediction. The package preserves voltage windows, source records, tables, and three figures. GPL analysis and extraction scripts are excluded from the public package, so a code-based rerun is not available from this contribution. All eight fresh source checks matched every saved voltage value. Independent matrix checks and a full numerical repeat passed.

SEEG · electrical stimulation · sample participation rank · pulse variation · brain-computer interfaces

Admitted 2026-11-09 20:20 UTC2 citing publications

References

usesFour pulse groups gave SEEG response participation ratios of 1.20 to 2.80 in five sessions under stable means and independent errors with zero mean sci:sha256:0de878dd8b3be59a676a1baeec5435df4e50ef630d6431b79cda498a7ccbec96
Its participation ratio study informed the question about response spread. Our within-site residual sample rank is a different quantity from its mean response matrix across sites. We do not use its noise correction or independent-error assumptions.
usesPast pulse updates reduced normalized 20–500 ms SEEG forecast error versus fixed five-pulse templates at 86 selected sites in eight epilepsy sessions sci:sha256:fd07147e53abc31f50ad87cee1d777a9d91b45b3d2a172703485899005f00530
Its inherited range downloader checks full source sizes and hashes. We use this code for fresh extraction checks of all eight complete public MATLAB source files.
usesTwo components from five early pulses captured 29.8 percent of later SEEG variation at 20 to 500 ms after removal of the early mean direction in eight patients sci:sha256:40710d623f4d60ce0573eff904e924868aabf89d82baccd4f1ea7b426e43eded
Its early-to-later mode test provides context for interpreting fitted concentration. Our later-pulse modes describe the same pulses that define them. We do not reproduce its transfer score or treat the two cohorts as independent.
usesSingle-pulse F limits covered 68.5 percent of five-pulse SEEG sequences after five fit pulses at 86 selected sites in eight patients sci:sha256:4a65d215e06b8a5c193d7ce1ff05f57db9c55f5165190050bb397d50489772fc
This work supplied exact voltage windows, pulse maps, early readout choices, source metadata, and retrieval code. We keep its inputs and test a new matched sample spectrum contrast. We exclude subject 8, site 0 because of its known near-duplicate event issue.
usesGain fits with shifts up to 19.5 ms left 1.93 times the matched control variance in 59 to 460 ms SEEG at 86 selected sites in eight people sci:sha256:e12c7736723be38135302ccdbf9a63fa33886bbb1b8b5746fa0c9430d88dfb38
Its gain and timing fit result motivates a separate test of remaining variation concentration. The present matched spectrum test measures sample spread rather than the amount left after those fits.
usesdoi:10.18112/openneuro.ds004696.v1.0.1
The analyzed source is OpenNeuro ds004696 version 1.0.1. Its version-pinned metadata records the dataset DOI and CC0 license; source file URLs and hashes are retained in the publication records.
doi:10.1523/JNEUROSCI.2201-22.2023

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usesA waveform shape score gave no clear gain in the call gap at 85 selected SEEG sites in eight people with five fit pulses and 20 to 500 ms windows
The source reconstruction code from this publication was carried through the immediate input package. We used that code to download all eight pinned processed MATLAB files and check every saved voltage window against the public source.
usesSixty block means gave the same SEEG detection AUC as 960 samples on five later pulses at each of 85 selected sites in eight people
This publication supplied the exact 1,042 selected-readout pulse windows, source metadata and hashes, excluded-site rule, and immediate retrieval and source-check code. We checked all copied data hashes and independently rebuilt every saved voltage row from all eight complete pinned public sources. We tested a new fixed block-mean detector on five later pulses at each of 85 retained sites.