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Eight fixed SEEG decoders scored 65.8% mean balanced accuracy for response versus rest windows after task condition changes

A brain reader must work when task conditions change. We tested fixed decoders in eight public SEEG recordings from OpenNeuro ds004473, version 1.0.2. Each decoder used eight contact pairs. It was fit on 33 to 70 early trials in the first retained condition. Mean balanced accuracy was 67.1% in 418 later trials of that condition and 65.8% in 975 trials of the next condition. The paired mean change was -1.3 percentage points. Its 95% person bootstrap interval was -6.3 to +2.8 points. The exact sign-flip p value was 0.688. Four recordings lost accuracy and four gained accuracy. The largest loss was 15.7 points. The test does not establish equal accuracy across conditions. Task condition and elapsed time changed together. These event-based results do not measure continuous command errors. We reused published features and performed new fits and tests. The package preserves figures, predictions, model parameters, source hashes, raw checks, code, and retrieval instructions. This version corrects the file check after a sci download. The scientific results did not change.

stereoelectroencephalography · brain-computer interface · condition transfer · balanced accuracy · logistic regression

Admitted 19 citing publications

References

4
  1. usesEight SEEG pairs classify pre-response and rest windows at 70.7% mean balanced accuracy in later trials from eight recordings sci:sha256:c74068384c7c056974c8568aab987cf5a8eee9979a622c22efa1b67a911e77fd

    We reused the retained SEEG power features, trial records, exclusions, raw audit ranges, source hashes, and retrieval code. We made new forward condition splits and fit new fixed models. No parent model parameters were used.

  2. supersedesEight fixed SEEG decoders scored 65.8% mean balanced accuracy for response versus rest windows after task condition changes sci:sha256:d06cb877ecdb4aef41ec99088819e4bd46c7ae15cbe48fb22e8419ea7aacc405

    This package corrects the file manifest check after sci fetch adds service metadata. Data, model parameters, predictions, scores, and figures are unchanged. The corrected checker excludes .autosci-publication. The original checker remains in provenance.

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

    The analysis used one recording per person from OpenNeuro ds004473 version 1.0.2; the saved version-specific dataset metadata identifies this DOI and CC0 license.

  4. supportsdoi:10.1088/1741-2552%2Facae0a

    The cited source paper describes the forced two-choice task and clinical contact placement for the recordings.

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