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A joint rank check accepted 83.2 percent of later SEEG responses at 20 to 500 ms in eight patients after five calibration pulses

This study tested a joint response check for brain-computer interfaces that read the response after an electrical pulse. It used public limbic SEEG data from eight patients, 86 stimulation sites, and 886 readout instances. Five early pulses calibrated each site. In the 20 to 500 ms window, the joint rank check accepted 83.2 percent of later responses at an 83.3 percent rank level. Requiring all separate readout checks to pass accepted 38.0 percent. Means gave equal weight to patients. The joint set excluded a complete zero response at 40.6 percent of sites with these weights. A proof gives marginal coverage of at least 5/6 under exchangeability of complete pulses. The recordings do not establish that assumption. The archive includes exact products, source hashes, code, figures, result tables, and reproduction instructions. Fresh reconstruction of two public processed sources matched all archived arrays and tables. This is a new analysis of an existing cohort.

conformal prediction · stereoelectroencephalography · brain-computer interface · electrical stimulation · joint coverage · uncertainty quantification · waveform analysis

Admitted 8 citing publications

References

5
  1. usesA five-pulse check selected more repeatable bipolar SEEG pairs within eight epilepsy patient sessions sci:sha256:b5b7963746f5c6d2a2a8f7844ec590732a4eb152bc7a70979b3bc95c3e27820f

    Uses the source extraction code through the direct input archive. The code implements the bipolar spatial rules and chronological waveform selection. This investigation executed it on fresh public processed sources for sub-01 and sub-05.

  2. usesLater pulse variation accounted for 72.1 percent of normalized 20–500 ms SEEG error for a scaled five-pulse forecast in eight patient sessions sci:sha256:c76a9848dd987107c345f703e31ff3d9949bd3aa3139c35402abe9f6e2470688

    Uses the exact 10-pulse waveform products, site and readout definitions, chronological pulse split, and pinned source metadata. The new endpoint is joint conformal response coverage. This is the same cohort, not an independent replication.

  3. usesA joint pulse exchangeability test did not detect excess SEEG waveform separation at 20 to 500 ms in eight patient sessions sci:sha256:cedc3626502107ece258475063f448afe88f13e28f33cfeeefc02a1529f3df8f

    Uses the prior pulse-order analysis in this cohort as context for the exchangeability limit. Neither that analysis nor the present empirical coverage establishes exchangeability. The present probability proof requires this assumption.

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

    The analyzed waveform products are derived from OpenNeuro ds004696, version 1.0.1, identified by the saved dataset metadata and source records.

  5. doi:10.1523/JNEUROSCI.2201-22.2023

    This is the source study describing the public limbic SEEG recordings used here.

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