Separate beta calibration increased mean AUC in later trials from eight SEEG recordings with eight pairs

We tested two beta calibration rules in OpenNeuro ds004473 version 1.0.2. Both rules selected eight bipolar SEEG pairs from early trials. The target was the state 0.75 to 1.25 seconds after a key response. Calibration for beta increase after response raised mean later-trial AUC from 0.498 to 0.579. The comparison used 673 test trials from eight people. Seven people had a gain. The mean paired gain was 0.081, with a descriptive 95% person bootstrap interval [0.030, 0.137]. The exact two-sided sign-flip reference gave p = 0.0234 under independent, symmetric person effects. Both planned sensitivity checks gave similar mean gains. The fixed threshold called 13.0% of target windows and 7.6% of rest windows. The result supports separate state calibration in this reused clinical cohort. It does not validate continuous control, movement-end detection, transfer across days, or brain stimulation. The package contains code, features, source versions and hashes, raw witnesses, results, figures, and reproduction instructions.

stereo-EEG · beta power · calibration · brain-computer interface · area under the curve