A 99.9th-percentile baseline voltage-step gate gave more calls 100 to 500 ms after selected landmarks in 14 SEEG patients

We tested a voltage-step gate in public SEEG data from OpenNeuro ds006519, version 1.0.0. The primary set had 21 records from 14 patients. All primary records had a sample rate of 4096 Hz. The channel threshold used the first half of a separate baseline window. The second half supplied the baseline test. At 100 to 500 ms after selected periodic landmarks, calls increased from 0.0901 to 0.1155 percent. The equal patient mean difference was 0.0254 percentage points. Its 95 percent patient bootstrap interval was 0.0073 to 0.0449 percentage points. The interval included zero when we used a stricter threshold. The landmarks are not hardware stop markers. This gate is a recording check. It cannot confirm an artifact or set a safe delay for brain recording. The package has code, four figures, exact counts, native voltage samples, source hashes, and a retrieval recipe. A fresh run reproduced the results and figures exactly. The prior detector also rebuilt all 35 imported landmark rows exactly.

SEEG · intracranial EEG · brain-computer interface · voltage-step gate · stimulation artifact · recording quality · OpenNeuro