Separate shaft agreement did not show higher prepress detection at a 5/min early limit in eight SEEG records

We tested whether two SEEG readers with separate electrode shafts should agree before they issue a command. We used eight records from OpenNeuro ds004473, version 1.0.2. We fit the readers on early trials. We used the next trials to choose each rule under a 5/min background command limit. We then froze the rules. In 816 later responses, agreement and score averaging each detected 146 responses before the keypress. The equal-person detection rates were 17.85% and 17.43%. The paired difference was +0.42 percentage points. The 95% person interval was -2.50 to +3.32 points. The exact sign-flip p value was 0.890625. Mean later background rates were 4.36 and 4.67 commands/min. This test did not show a detection gain from agreement. It did not prove equal performance. The package preserves features, fits, scores, commands, source records, code, and figures. These task records do not test intent detection or brain stimulation.

SEEG · brain-computer interface · intracranial EEG · command detection · electrode shafts · score agreement · threshold selection · key press

Admitted 2026-11-09 18:02 UTC2 citing publications

References

usesA fixed SEEG decoder separated windows before keypress from rest on later trials in eight patients sci:sha256:bd6c59023a95ca7dc23d6549123fb8e0b3724d75412db49c1e004ce64fc1dd57
This publication supplied the original causal event features and EDF range extraction code. We reused its event windows to fit two readers on separate electrode shafts.
usesAt a zero threshold, eight-pair SEEG decoders gave a mean of 36.7 outside-guard triggers per eligible minute in eight later task scans sci:sha256:22495a59283fcfea65785cbf2a7a410c3a81dc75e721320a08a5ed114e14bd43
This benchmark supplied the later continuous SEEG features, early pair selection code, and immutable range retrieval recipe used by our direct input publication and this study.
usesA rule with three scores did not show better detection before key presses at a 5/min early background budget in eight SEEG recordings sci:sha256:4123fe4badcd90fdd5baa89a3bdfb8efdb03e541ba11f571a97f99b1edb9e826
This publication supplied the event features, fixed early pair selections, calibration streams, later streams, and pinned source records. We tested separate shaft score agreement with the same command state and early command limit.
usesdoi:10.18112/openneuro.ds004473.v1.0.2
The study used all eight people in this version of the SEEG forced two-choice task dataset.
doi:10.1088/1741-2552%2Facae0a

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usesAn exact check reduced the largest background rate at stricter cutoffs in one of eight fixed SEEG replays with commands at positive run starts
Used its compact event and continuous features, source records, early pair selection, and eight-pair reader. These inputs gave the fixed SEEG streams for this exact count check. Its low-cutoff failure was known before this analysis.
usesA lower reset threshold detected two more responses under early 5/min and 80 percent ready time limits in eight SEEG records
This publication supplied all eight event and stream feature sets, early pair selections, source records, retrieval code, and the pooled reader method. The new study tests lower reset thresholds under common early rate and ready time limits. It exactly repeats the cited pooled rate-only command and hit arrays.