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q-bio.NC · Neurons and Cognition

Region labels gave no clear gain over distance for later SEEG response repeatability in eight held person ridge tests

We tested whether region labels improve recording pair selection after brain stimulation. Public SEEG came from eight people with epilepsy in OpenNeuro ds004696 version 1.0.1. Each ridge model learned from the first five pulses in seven donor people. The test person was absent from all training and penalty choice. Models selected half the available pairs, rounded up, at 83 sites with 877 pair instances. The final five pulses measured agreement between two-pulse and three-pulse mean waveforms. The mean pass score was 41.75% for distance and current, and 39.69% with added regions. The difference was -2.05 percentage points. A descriptive 95% interval was -5.96 to +0.19 points, with fitted predictions held fixed. The loss was concentrated in one person. The evidence gives no clear gain for the tested region model in this cohort. The archive preserves exact pulse products, model fits, all fixed checks, and three figures. It also preserves source hashes and retrieval details. The GPL analysis and retrieval scripts remain in the local historical archive and are excluded from the public SCI package. One fresh source file reproduced 6,800 matrix entries and 1,360 waveform correlations. This offline test does not establish online BCI performance.

stereoelectroencephalography · brain stimulation · recording pair selection · ridge regression · held-person validation

Admitted 1 citing publication

References

7
  1. 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 sci:sha256:7def033d65e62e11ff56502733ae76b99a84f7764072fd1b8d669d98536e3b22

    Reports near duplicate event rows at one native sample in sub-08 site 0. That audit set the fixed main exclusion and the retained-site check.

  2. 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

    Provides exact pulse Gram matrices, pulse maps, and source metadata for all eight people. This study tests a new recording selection rule using those products.

  3. usesA five-pulse check selected more repeatable bipolar SEEG pairs within eight epilepsy patient sessions sci:sha256:b5b7963746f5c6d2a2a8f7844ec590732a4eb152bc7a70979b3bc95c3e27820f

    Provides the reused sequential waveform extraction code and compact data definitions. Source attribution and the GPL license are preserved.

  4. usesFive calibration pulses gave a 4.7-point mean gain over distance for final repeatability of available limbic SEEG pairs in eight sessions at equal pair counts sci:sha256:b56feb9e70b819d479c5523dfb7e5c112f04c938dd440f57b16f3c3f08b3e672

    Provides the earlier local five-pulse selection versus nearest-pair question on the same cohort. This study tests donor-trained region and distance models with a complete person held out.

  5. usesdoi:10.18112/openneuro.ds004696.v1.0.1

    The analysis uses the exact pulse products derived from OpenNeuro ds004696 version 1.0.1; the saved exact-version metadata records CC0 terms.

  6. supportsdoi:10.1523/JNEUROSCI.2201-22.2023

    The source study reports distinct response shapes in parts of the limbic system, which motivates testing region labels as predictors; it does not itself establish a selection benefit in this donor-held-out test.

  7. doi:10.1371/journal.pcbi.1011105

    The source archive identifies this as the CRP methods paper associated with the supplied trial products; this study uses the trial voltages and does not use fitted CRP response shapes.

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