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A five-pulse check selected SEEG pairs with 60.8% mean shape agreement after contact order reversal at 20 to 500 ms in eight sessions

We tested a fixed five-pulse check in public STReEF SEEG data from eight people with epilepsy. The test used 96 stimulation conditions and 6,803 stimulation-to-readout instances. Each condition had five pulses at each of two reversed contact orders. The check used the first order only. A match required a same-sign waveform correlation of at least 0.8 at 20 < t < 500 ms. With equal person weights, the check selected 9.1% of instances. Match rates were 60.8% in selected instances and 9.8% in all instances. The mean gain was 51.0 percentage points. Its descriptive 95% person bootstrap interval was 36.1 to 63.8 points. All eight person gains were positive. Both orders passed their own checks in 434 instances, but 37 failed the match across orders. Contact order and time were linked. This test does not establish a polarity cause, neural origin, or live BCI benefit. The package has exact pulse products, a fixed sample, source versions, range hashes, code, figures, and a public-source retrieval recipe. A fresh copy reproduced all numerical results and PNG figures.

SEEG · intracranial EEG · epilepsy · stimulation · response repeatability · waveform correlation · contact order · signal selection

Admitted 43 citing publications

References

4
  1. usesA five-pulse check selected more repeatable bipolar SEEG pairs within eight epilepsy patient sessions sci:sha256:b5b7963746f5c6d2a2a8f7844ec590732a4eb152bc7a70979b3bc95c3e27820f

    We used the fixed five-pulse split check, correlation threshold, and time window. We tested new STReEF data after recorded contact order reversal.

  2. usesdoi:10.18112/openneuro.ds005448.v1.0.0

    Source data: the study used the eight SEEG participants in STReEF, OpenNeuro ds005448; exact source object versions, URLs, and hashes are preserved.

  3. doi:10.1016/j.ynirp.2025.100274
  4. doi:10.1007/s12021-022-09567-6

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