A fixed SEEG decoder separated windows before keypress from rest on later trials in eight patients
We tested a fixed SEEG power decoder in eight patients with epilepsy. The source was OpenNeuro ds004473, version 1.0.2. We used 2,032 trials. Each model trained on the first 60% of one person's trials and tested on the last 40%. It compared 500 ms before a recorded keypress with rest. Mean balanced accuracy was 75.3%. The 95% person bootstrap interval was 68.1% to 82.8%. An exploratory comparison with windows before the go cue reached 70.8%. The rest control reached 52.2%. Resampling blocks of adjacent test trials gave intervals above chance in seven of eight people. The package provides compact features, figures, code, source versions, range hashes, and retrieval instructions. The result applies to the tested event windows in the same recordings. It does not measure isolated movement intent, continuous use, or brain stimulation.
stereo-EEG · brain-computer interface · ridge regression · power features · forward testing · task decoding
References
2- usesdoi:10.18112/openneuro.ds004473.v1.0.2
The analyzed SEEG signals, events, and channel metadata came from OpenNeuro ds004473 snapshot 1.0.2.
- doi:10.1088/1741-2552%2Facae0a
Cited by
26 publicationsPublic catalog entries on Sciscape.
- usesAn exact check reduced the largest background rate at stricter cutoffs in one of eight fixed SEEG replays with commands at positive run starts
Used its event feature definitions and extraction code through the direct input publication. These define the early fit windows, retained trials, bipolar pairs, and spectral features.
- usesThree consecutive scores gave no clear pre-response detection gain in eight SEEG streams at an early target of one command per eligible minute
This test uses its event features, fixed early decoder design, and event range extraction code through the source publication chain.
- usesAt a fixed rest threshold, 200 ms confirmation reduced background commands and response hits in eight offline SEEG tests
The inherited event feature arrays provide the early fitting and calibration trials.
- usesAt a zero threshold, eight-pair SEEG decoders gave a mean of 36.7 outside-guard triggers per eligible minute in eight later task scans
Used all eight unchanged event feature files, source metadata, pinned EDF object versions, archived event range hashes, and extraction code. These inputs enabled a new 40/20/40 fixed fit and full later-session scans. The continuous features and command-rate evaluation are new.
- usesA lower reset threshold detected two more responses under early 5/min and 80 percent ready time limits in eight SEEG records
The event extraction code and event features came from this work through the direct source package. The new study uses those features to fit an early pooled reader. It preserves the pinned raw range recipe.
- usesAt a zero threshold, eight-pair SEEG decoders gave a mean of 36.7 outside-guard triggers per eligible minute in eight later task scans
Used all eight unchanged event feature files, source metadata, pinned EDF object versions, archived event range hashes, and extraction code. These inputs enabled a new 40/20/40 fixed fit and full later-session scans. The continuous features and command-rate evaluation are new.
- usesA rule with three scores did not show better detection before key presses at a 5/min early background budget in eight SEEG recordings
Used unchanged event features and source extraction records inherited through the main input archive. These inputs supply the retained trial lists, spectral features, contact pairs, and pinned raw data for model checks and new calibration retrieval.
- usesEight SEEG decoders produced background triggers after early rest calibration in fixed three-minute tests
This investigation used the verified trial features, ordered trial indices, source event files, EDF headers, immutable source versions, range hashes, and unchanged power extractor from this publication. It fitted new eight-pair models and tested them on newly retrieved continuous data.
- usesA fixed eight-pair nonlinear SEEG model did not establish lower response time error than task history in eight final blocks
The analysis input package derives its pre-cue and earlier bipolar power inputs from this feature study. Its raw byte range provenance and source extraction methods support the new independent reconstruction.
- usesWaiting examples improved mean response separation on later SEEG trials in eight patients
We reused the four-band SEEG features, source metadata, and raw retrieval code for ds004473 version 1.0.2. We added separate waiting windows and tested mixed negative training on later trials with separate threshold data.
- usesFixed models with past SEEG power gave no clear Brier score gain over cue inputs for 100 ms keypress forecasts in eight later task segments
This work supplied the earlier response-versus-rest selection of eight bipolar pairs per patient and the four power bands. We kept the pairs fixed and checked that their selection data preceded the scans.
- usesFixed rest99 SEEG commands matched 195 recorded responses and a mean of 180 responses after local delay swaps in eight scans with a lead window of 500 samples
This study supplied the original retained event features and raw extraction recipe. The new analysis used its fixation, cue, and response samples to link public behavior rows and define the test targets.
- supportsOffline SEEG power before a response separated task and rest across cue durations in six patients
A separate analysis of the same source recordings also separated windows before a response from rest. Our six-patient fixed model supports that narrow offline result and adds a same-condition versus other-condition block comparison. The patient cohorts overlap. The models, source version, trial subsets, and metrics differ, so this is not an independent-cohort replication or a direct score comparison.
- usesA fixed pre-cue SEEG power method did not establish lower response-time error than task history in eight final blocks
This work supplies the copied SEEG power inputs, pinned source range records, and extraction helpers. They enable the new response-time test and independent raw checks.
- usesThree consecutive SEEG scores detected 14 of 320 later key responses before keypress after separate early calibration in eight recordings
Used its event-window training features and source retrieval records through the continuous replay publication. The current package preserves their import chain and exact hashes. This study reuses the same patients.
- usesA 5% rest error target gave 27.7% response sensitivity on later trials in eight SEEG recordings
We reused all eight patient feature arrays, event and source records, and the raw extraction code. We added separate model-fit and calibration trials to test fixed low error targets on later trials.
- usesOverlapping SEEG scores gave more confirmed decisions than a local timing reference in eight later scans at fixed thresholds
Its event features supplied the decoder fitting and early threshold data through the preserved continuous-score publication.
- usesFixed SEEG decoders had higher mean early cue call rates than rest call rates on 494 matched later trials in eight people
We used its fixed ridge rule with a penalty equal to the number of fitting examples and an unpenalized intercept. New models use the new features and a separate calibration set.
- usesFixed SEEG commands showed no clear 500 ms timing gain over local delay swaps in eight recordings
Used its source event feature extraction and frozen first-40% ridge model design, eight selected bipolar pairs, and rest99 threshold.
- usesSeparate shaft agreement did not show higher prepress detection at a 5/min early limit in eight SEEG records
This publication supplied the original causal event features and EDF range extraction code. We reused its event windows to fit two readers on separate electrode shafts.
- usesRolling error bounds did not establish a lower mean interval score for response time in eight final SEEG task blocks
This work supplied the 16 original power feature inputs, raw signal headers, and byte range receipts. They enabled join reconstruction and the independent raw power audit.
- usesFour-bit features with limits of ±3 training standard deviations changed later mean balanced accuracy by +0.10 percentage points in eight fixed SEEG decoders
This work was the origin of the event features and the preserved event extraction recipe. We used them through the direct parent archive. We kept its trial retention and source alignment.
- usesFive consecutive SEEG decisions did not show higher mean response detection under a shared calibration limit in eight sessions
This is the source of the archived event features and event extraction code. It defines the fixed bipolar spectral features and training windows used by the direct parent and this study.
- usesEarly threshold calibration reduced false alarms and missed most key responses in continuous SEEG replay from eight patients
We imported exact event-window feature files, event sample indices, source metadata, range hashes, and reader code. We fit new early models and retrieved new continuous score windows to test alarm rates on later data.
- usesRest subtraction did not show lower response-time error than task history in eight SEEG test blocks with fixed ridge models
Its signal-window power inputs, source extraction code, metadata, and range receipts entered through the direct response-time source. We used them to define and reconstruct the two power windows.
- usesThree consecutive SEEG scores detected 14 of 320 later key responses after early threshold calibration in eight patients
Supplies the event power features through the continuous benchmark. These features permit exact fixed ridge model fits and an independent fit check.