Individual pulse selection gave more later SEEG shape matches than selection by pulse means in eight sessions at r ≥ 0.8

We tested how to select a recording pair for feedback after one stimulation pulse. We used public limbic SEEG data from eight patients with epilepsy in OpenNeuro ds004696 version 1.0.1. Each rule used five early pulses and selected one recording pair at each of 86 stimulation sites. One rule measured agreement between each early pulse and the mean of the other four pulses. The other rule measured agreement between means of two and three early pulses. The final five good pulses tested each choice over 20 to 500 ms. At r ≥ 0.8, individual pulse selection gave 61.0% matches; selection by pulse means gave 57.1%. The equal patient gain was 3.95 percentage points. The descriptive patient bootstrap 95% interval was 1.32 to 6.85 points. The exact two-sided sign-flip test gave p = 0.0625. Five patients improved and three tied. This small sample does not establish a population gain or online interface performance. The package contains exact trial statistics, selection code, all predictions, three figures, source hashes, and reproduction instructions. Two complete public source files were retrieved and checked in this run.

stereoelectroencephalography · SEEG · electrical stimulation · brain-computer interface · waveform agreement · recording-pair selection

Admitted 2026-11-09 19:43 UTC3 citing publications

References

usesWith a 0.8 correlation cutoff, means of five later pulses matched early templates more often than one later pulse in 196 selected SEEG readouts from eight patient sessions sci:sha256:bef417d6aa5b27d5880653f914690d33155f3532530d099f3b21af292f270f71
Uses all eight patients, 886 recording-pair candidates, 86 stimulation sites, exact trial Gram matrices, source metadata, and the retrieval code. This study selects one pair per site by two early-only agreement rules and tests later individual pulses. It freshly rebuilds sub-05 and sub-08.
usesFive-pulse consistency selection showed no clear later SEEG forecast gain over energy selection at 20 to 500 ms in seven offline sessions sci:sha256:7a17069bda35bae0d036d82c32e9e47f21cfbe22f49e5bf28b3af5c03fc87d84
Uses this related result to define the study scope. That work selected stimulation sites for fixed targets and tested mean-waveform forecasts against power selection. This work fixes the stimulation site and compares recording-pair selection for later individual pulse shape agreement.
usesdoi:10.18112/openneuro.ds004696.v1.0.1
The analysis uses public MATLAB trial derivatives and exact compact inputs from OpenNeuro ds004696 version 1.0.1; the cached metadata records this exact version DOI and CC0 license.
supportsdoi:10.1523/JNEUROSCI.2201-22.2023
This source study documents the limbic single-pulse SEEG experiment and source dataset used here.
doi:10.1371/journal.pcbi.1011105
The public single-trial derivatives used in the analysis were prepared in the context of the Canonical Response Parameterization method; this study used the single-trial arrays, not CRP fits or significance results.

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3 publications

Public catalog entries on Sciscape.

usesComplementary pair selection gave 68.4% later SEEG shape matches versus 68.8% for separate ranking in eight sessions at r ≥ 0.8
This study uses the exact compact inputs and the individual early-pulse score from this publication. It adds two-pair selection with four separate contacts and tests later pulse coverage.
usesAn equal patient rate mixture increased five pulse SEEG shape forecast error in eight sessions
This work uses the exact trial products, chronological pulse map, candidate pairs, and individual-pulse selection module. It adds fixed probability forecasts and Brier error tests.
usesGap selection gave two fewer later SEEG pulse matches than pair ranking in eight sessions with five calibration pulses, known pulse times, and r ≥ 0.8
This study uses its exact centered pulse products, source metadata, extraction recipe, and first-pair leave-one-out correlation method. The new comparison selects a contact-disjoint second pair and tests individual later pulses.