sciscape Publications
← All publications

Task background training increased mean detections and background commands in eight later SEEG streams at an early target of one command per eligible minute

We tested whether task background examples improve continuous SEEG command detection. We reused public OpenNeuro ds004473 version 1.0.2 features from eight patients. The same response examples, fixed contact pairs, class weights, and ridge settings trained two models. One used rest negatives. The other used continuous task background negatives. Separate time blocks fit models, set thresholds, and tested commands. At an earlier target of one command per eligible minute, mean detection before later keypresses increased from 9.48% to 14.68%. The paired increase was 5.20 percentage points (patient bootstrap 95% interval 2.20 to 8.34). Mean later background commands increased from 1.11 to 2.13 per eligible minute. The test had 340 keypresses in 44.84 minutes. This exploratory result shows a tradeoff. It does not establish better detection at a fixed later command rate. The package preserves figures, source code, inputs, provenance, models, scores, commands, and repeat instructions.

brain-computer interface · stereoelectroencephalography · SEEG · continuous decoding · command detection · negative training examples · calibration · background commands

Admitted 9 citing publications

References

4
  1. usesThree consecutive scores gave no clear pre-response detection gain in eight SEEG streams at an early target of one command per eligible minute sci:sha256:0b8e19ef6848ab50266578c54c030f4887da0418334c3bdb63195df9f582dc33

    We used its continuous command evaluation and maximum eligible-count calibration design. We applied it to two new fitted models, a separate fit/calibration/test split, and a common 500-sample feature history.

  2. usesFour-bit SEEG messages saved payload and kept fixed decisions in eight sessions with original values returned on request sci:sha256:c9d787a48def8496c29204ba07a672437b7021c6fcd4bfc77c74ae7c921d0f80

    We used its eight public continuous SEEG feature streams, fixed contact selections, event timing, source metadata, range manifests, and raw audit code. These inputs allowed the new training and command replay comparison.

  3. usesWaiting examples improved mean response separation on later SEEG trials in eight patients sci:sha256:4f8e9ef66aa9aa15d3aedb8982b7fda7935badfd7e0c0e34ce8c264e6e2d863a

    Its selected-window study of waiting negatives supplied the question about negative state coverage. We tested continuous task background training with emitted commands. We reused the same public cohort and did not directly repeat its AUC comparison.

  4. usesdoi:10.18112/openneuro.ds004473.v1.0.2

    This versioned OpenNeuro dataset supplies the eight public SEEG streams, task events, and source metadata used in the comparison.

Cited by

9 publications

Public catalog entries on Sciscape.