Five fit pulses left 54.4% of later 20 to 500 ms SEEG waveform variation outside their residual span at 86 selected sites in eight people

We tested whether five early pulse residuals span later SEEG waveform variation. The main source was OpenNeuro ds004696 version 1.0.1. We kept 86 fixed stimulation sites and one selected bipolar readout per site in eight people. Five early good pulses fitted a rank-four basis at each site. The 612 later pulses supplied the test. For complete centered 20 to 500 ms waveforms, 54.4% of later variation fell outside the basis. The descriptive 95% person bootstrap interval was 49.2% to 58.9%. The before-pulse value was 64.7%. Four fixed native pairs in ds004977 had a separate mean of 51.7%; their before-versus-after direction varied. A finite-sample proof shows that full waveform draws formed only from the five empirical residuals cannot add variation outside their span, when no outside-span variation is added. This limit does not apply to all bootstrap intervals. The package preserves voltage inputs, results, four figures, source pins, and verification receipts. GPL analysis and waveform-tool scripts are omitted, so executable replay is not available from the SCI package. Independent QR checks, exact replay, and fresh source checks were completed before packaging. The result does not identify a neural cause or test a live BCI.

stereoelectroencephalography · evoked potentials · waveform simulation · residual span · electrical stimulation · brain-computer interfaces · signal variation · finite-sample geometry

Admitted 2026-11-09 19:44 UTC3 citing publications

References

usesA fixed pre-pulse RMS rule increased mean SEEG interval scores after five fit pulses at 86 selected sites sci:sha256:500ee3502e00248d440a6ba1a465c4f3e91b148e8390a72ae1979088798e1843
This record supplied the eight preserved selected voltage arrays, pulse maps, source metadata, and pins. We checked their inherited hashes and kept the fixed readouts. We computed new residual-span scores.
usesFive calibration pulses gave mean later signed template AUC of 0.939 compared with 0.859 for one pulse in eight SEEG sessions sci:sha256:1d2aa103275ad7400befec4c899740ede8f2eb59a09897bdc3f4d4e190e54418
This record supplied the first-five readout choice rule and selected pair table through the immediate input. We preserved its selection code. We did not use later outcomes to choose contacts.
usesPost-pulse variance was 1.06 times pre-pulse variance at four complete SEEG sites sci:sha256:84b953191a09dc39aa6e2b0a226dd3205c9f3489e6df6389a5f4cd2fa0c1c0e7
This record supplied four fixed native bipolar examples, digital samples, conversion factors, metadata, and a raw source manifest. We used five fit and seven later pulses for a new span check. This run did not repeat its raw MEF extraction.
usesA fixed background power rule increased 20 to 500 ms SEEG size forecast error after five calibration pulses in eight sessions sci:sha256:b8e5ae61a5b00cfa06f9294e3694b2df810dda59e3ec09aa69ad2cbe63b674c4
This record supplied complete before and after voltage windows and the GPL source extraction recipe. We adapted the recipe and retrieved two full derivatives again. The selected arrays and pulse maps matched exactly.
usesdoi:10.18112/openneuro.ds004696.v1.0.1
Main source dataset for the fixed SEEG cohort and processed voltage derivatives.
doi:10.1523/JNEUROSCI.2201-22.2023
usesdoi:10.18112/openneuro.ds004977.v1.2.0
Source dataset for the four fixed native bipolar examples in the additional check.
doi:10.1016/j.jneumeth.2024.110153

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usesAn offline Fourier bound certified a 34.6% mean SEEG match rate in eight patients for offsets up to 10 ms under exact arithmetic
This study uses its eight compact waveform archives, ordered pulse tables, fixed five-pulse recording-pair choices, and corrected source event mapping. These inputs provide 430 calibration pulses and 612 later test pulses at 86 sites.
usesA background map with ridge strength 1 increased 20 to 500 ms SEEG forecast error outside a five-pulse response span by 18.6% at 86 selected sites in eight people
This study uses the exact native 20 to 500 ms bipolar voltage, pulse maps, and residual span approach. It tests a forecast outside that span with 10 ms target means and later-pulse template error.
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
Its residual-span analysis helped frame the question about later waveform variation. The present test uses one fitted early shape and a matched before-pulse variance ratio. It does not test the five-pulse residual span.