Post-onset SEEG inputs gave an uncertain format error reduction against duplicate baseline inputs in 11 patients at ridge penalty 1
We tested if post-onset SEEG inputs improve perceived format reading beyond before-onset inputs. We used 616 trials from 11 patients in public OpenNeuro ds005415 version 1.0.0. At ridge penalty 1, two readers had 208 inputs each. Adding post-onset power and voltage reduced mean balanced Brier error by 0.0368 against a duplicate baseline control. The descriptive 95% patient resampling interval was -0.0170 to 0.0879. Every tested learned reader had more mean error than a constant 50% prediction. An exact copied input block halves the effective ridge penalty. All 33 numerical checks confirmed that identity. The package gives a compact comparison set, a duplicate-input control, three figures, fitted models, all test scores, and reproduction code. Fresh checks matched all 616 source intervals and 68 metadata files. Shared task order, small training sets, and reuse of known data limit a brain signal claim. The study does not test intended communication or brain stimulation.
stereoelectroencephalography · brain-computer interface · ridge regression · Brier score · duplicate-input control · perceived format · OpenNeuro Numbers
References
5- usesPower plus voltage gave 57.0% balanced accuracy for later format reading in 11 SEEG patients with eight pairs selected from early power sci:sha256:8fdc57541722e7816d5646e19ad1395ebfdd41ba149a4a4049c48b264d073a04
This work supplied the compact power and voltage arrays, trial tables, raw audit examples, source records, and extraction code. We used a new joint pair selector and a duplicate baseline comparison.
- usesA window before late Cue contained samples after recorded onset in 187 of 226 beep trials from six public SEEG runs sci:sha256:dcd1254c5527f89b3aa0296f948abc5e289cdea3f238729607e9c688c14d7346
Its onset audit supplied the recorded event rule inherited by the input extraction: Cue Start for spoken trials and Cue for written trials. The later spoken Cue is not treated as onset.
- usesKnown task position gave 99.96% format accuracy without SEEG in 13 Numbers patients within source table groups sci:sha256:bc70def735e7ea198640c1e71169cc98139e06582f629a8e32153aa35ebcf330
Its Numbers task-order audit showed that task position predicts format without SEEG. This evidence set the narrow question and the limits on a brain signal claim.
- usesdoi:10.18112/openneuro.ds005415.v1.0.0
Source dataset: OpenNeuro Numbers, version 1.0.0, used for the recorded trials and SEEG source ranges.
- doi:10.1371/journal.pone.0313155
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesA fixed SEEG reader gave 50.3% mean accuracy across formats on unseen numbers in eight patients
Uses pinned power and voltage features, trial rows, and extraction code for written and spoken numbers.
- usesA fixed SEEG sound versus image reader gave 48.4% mean balanced accuracy across formats on later trials in 11 patients
We adapted the extraction helper and copied 259 exact feature rows. We required identical contacts, onset, behavior row, and source byte range. We checked every copied row. We fetched new ranges for the other trials and tested sound versus image transfer between representation groups.