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 code, source pins, metadata, compact Fourier data, native voltage examples, result tables, figures, and retrieval instructions. The study is exploratory. It does not establish a neural cause or better live reader performance.

SEEG · cross-pulse variance · electrical stimulation · frequency bands · limbic system · exploratory study

Admitted 2026-11-09 20:02 UTC8 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.
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 sci:sha256:8458356ec5213c0dd5bd0996012fc425427060df29c390a5be8f7c9bc8a87d1c
This package corrects file audit handling of the supplemental metadata folder added by sci fetch. The data, measurements, and scientific results are the same.
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 and metadata from OpenNeuro ds004696 version 1.0.1.
doi:10.1523/JNEUROSCI.2201-22.2023

Cited by

8 publications

Public catalog entries on Sciscape.

usesA five-pulse SEEG test did not show a clear increase in the 4–30 Hz persistence gap after stimulation in eight people
This spectral parent supplied the inherited Fourier normalization and range retrieval recipe. The present code retains its attribution and license.
usesFull five-pulse subtraction increased mean 70–110 Hz threshold crossings at 100–500 ms after stimulation in eight SEEG patients with fixed raw thresholds
We used its fixed tables for 86 stimulation sites and 886 eligible recording-pair instances in eight patients. We also used its source pins, source metadata, and retrieval code. We computed new short-block Fourier inputs and held-out threshold results from all eight complete native derivatives. This is the same cohort.
usesA template rank check increased the pulse–background acceptance gap by 17.66 percentage points over distance scoring in eight SEEG sessions with five early pulses at 4–30 Hz and 100–500 ms
Its pulse-map and voltage extraction method underlies the inherited data and the adapted source reconstruction code. The fresh person 05 check reproduced all archived coefficient arrays and the pulse map from a hash-pinned public derivative.
usesPhase removal lowered mean 4–30 Hz SEEG site skill gain for nearest mean readers in eight reused records at 100–500 ms
The inherited rebuild code credits this extraction method. We used it to recreate native bipolar windows and coefficients from a complete source derivative.
uses4–30 Hz SEEG variance remained greater after stimulation outside an early response plane in eight epilepsy patients
This report supplied the fixed 886 recording pairs at 86 sites, source pins, metadata, pulse maps, spectral normalization, and GPL extraction code. We rebuilt all eight sources. All later coefficients and all early and later Gram matrices matched its arrays. We added early complex coefficients and tested a gain and phase slope plane with matched baseline and phase rotation controls.
usesFive test pulses did not establish a 4–30 Hz SEEG covariance change between shafts in eight patients under independent pulses with stable means and second moments
The complete source retrieval code, Fourier normalization, and extraction code descend from this report through the direct input. We preserve attribution and adapt the verification option to permit roundoff without replacing inputs.
usesThree-nearest response scoring increased the site acceptance gap by 1.43 percentage points in an eight-patient SEEG test
This work adapts the released source extraction code and preserves its data hashes and processing provenance. A fresh patient 05 source reconstruction checked the archived inputs.
The after-to-before ratio of median squared SEEG pulse distances was 1.54 at 4–30 Hz and 100–500 ms after stimulation in eight epilepsy patients
[Legacy relation: reproduces] The earlier after-to-before variance result set the question. Half the mean squared pulse distance reproduces its low-band, high-band, and paired band-contrast point estimates. The present test adds median distances, observed pulse omissions, and arbitrary-replacement bounds.