Two versus five calibration pulses changed 54 of 258 SEEG site choices under a half-energy rule in eight people at 100 to 500 ms

We used public SEEG from eight people in OpenNeuro ds005448 version 1.0.0. We compared two and five early calibration pulses per candidate site. The rule kept at least half of the largest calibration target energy, then chose the largest target score. A target was one recording shaft. Other shafts supplied a fixed comparison panel. Five separate later pulses scored each choice at 100 to 500 ms. The comparison contained 31 groups, 72 candidate conditions, and 258 target choices. Two pulses changed 54 choices relative to five pulses. The equal person mean later score change was -0.53 percentage points. The descriptive 95% person bootstrap interval was -1.23 to +0.05 points. The evidence did not establish equal later scores. Nine choices had less than half the later target energy of the five-pulse choice. The calibration energy floor did not bound later energy retention. Only 155 of 360 candidate test pulses followed calibration at all candidates in their group. This is an offline comparison within sessions, with a reused source sample. Actual pulse omission and live BCI benefit were not tested. The package preserves exact pulse products, source pins, code, all scores, four figures, and repeat instructions. Fresh retrieval checked all 960 archived raw pulse ranges and reproduced the input products.

stereoelectroencephalography · electrical stimulation · brain-computer interfaces · calibration · site selection · pulse budget · target energy · OpenNeuro ds005448