A temporal voltage correction with alpha = 1 increased mean SEEG forecast error after contact order reversal in eight STReEF patients
We tested whether voltage immediately before a pulse improves a five-pulse forecast of later stereoelectroencephalography (SEEG) voltage in eight STReEF patients. Across 96 conditions, a shared temporal ridge correction with fixed alpha = 1 increased mean relative test error by 1.952%; the descriptive patient bootstrap interval for the increase was 1.112% to 2.812%, and error increased in all eight patients. An early-only penalty choice had mean skill of -0.047% (interval -0.239% to +0.136%), while its matched no-pulse control had +0.603% skill. A fixed alpha = 10 gave +0.238% mean skill. The five fit pulses and five test pulses had reversed recorded stimulation contact order, so time and order cannot be separated. This exploratory study reuses a clinical sample and does not establish a causal stimulation effect or live interface performance.
stereoelectroencephalography · forecasting · brain-computer interface · ridge regression · voltage · brain stimulation · OpenNeuro · STReEF
References
6- usesSlow SEEG energy before a pulse had a mean rank correlation of 0.164 with later template error in eight STReEF patients sci:sha256:69de30dded254486ecf29150ebe07c78a5b9f3ca73e1487bc58407ae1c9eb2bb
We reused the fixed metadata sample, source metadata, pinned source objects, expected byte-range hashes, and retrieval helpers. We retrieved all native ranges again. We added immediate input windows, a matched no-pulse target, and new forecast tests. The study adds no new patients.
- supersedesA temporal voltage correction with alpha = 1 increased mean SEEG forecast error after contact order reversal in eight STReEF patients sci:sha256:ae25d061b062dc79e00c7246f0f0ddfe7b4e517b3180a39fe2f9e55f35f7a0c7
This package supersedes sci b90153e6-5f2c-4d93-958b-be9714744878. It corrects the file-check tool to exclude the metadata directory added by sci fetch. All data, analysis code, scores, and figures are unchanged.
- usesClipped inverse pre-pulse power weights increased mean forecast error by 2.23 percent for centered 20 to 500 ms SEEG voltage in eight patients with reversed test contact order sci:sha256:424c1d54a4e0474f7c777815ebe8e7f9d509b1c6a33e7afb1164b25d88777b37
We use this prior power-weight study to explain the scope of related forecast work. It tested weights on centered native voltage. This study tests a temporal correction on projected voltage. The reported scores are not a direct comparison.
- usesdoi:10.18112/openneuro.ds005448.v1.0.0
The analysis used OpenNeuro STReEF ds005448 version 1.0.0 for all eight patients and 96 selected conditions.
- doi:10.1016/j.ynirp.2025.100274
This is the source dataset study cited for STReEF.
- doi:10.1007/s12021-022-09567-6
The STReEF source authors request credit for this clinical iEEG data organization workflow.
Cited by
1 publicationPublic catalog entries on Sciscape.
- usesSeparate scales for 16 slow modes increased mean relative SEEG forecast error at 20–500 ms in eight patients after contact order reversal
This publication supplied the fixed metadata sample, 16-mode coefficient inputs, source metadata, pinned range hashes, cosine transform, and retrieval checks. We kept two target windows, rebuilt every selected input from public raw ranges, and tested component scales. No new patients were added.