Mean 2–30 Hz power correlation across SEEG shafts was lower after pulses in later blocks of five pulses in eight STReEF patients
We tested shared pulse-power changes across separate SEEG electrode shafts in eight STReEF patients. The fixed sample had 96 conditions and 960 pulses. Each shaft used the mean log power from contact pairs with no shared contacts. In the later five-pulse blocks, mean 2–30 Hz shaft correlation was 0.244 at 100–500 ms after pulses and 0.312 in matched windows before pulses. The primary after-minus-before difference was -0.068, with a descriptive 95% whole-patient bootstrap interval [-0.135, -0.001]. The two-sided exact patient sign-flip reference was p = 0.102. Six of eight patient differences were negative. The sample mean was lower after pulses, but the sign-flip reference did not give clear evidence of a reduction. Fixed checks did not show a consistent rise after pulses. The variance of an equal-weight mean of standardized shaft traces was 2.806 times its independent pulse-label reference after pulses and 3.269 times that reference before pulses. These ratios describe measured dependence. They do not identify a neural cause. All 960 source ranges and 1,088,480 rebuilt powers passed verification. The package preserves the plan, powers, source pins, results, figures, code, and replay instructions.
SEEG · stereoelectroencephalography · pulse power · cross-shaft correlation · brain-computer interface · variance ratio · STReEF
References
8- usesFive final pulses per site gave no clear mean 4–30 Hz power correlation after linear trend removal in eight SEEG patients sci:sha256:b6b5641a40184bd63f86f394b8d0f35145bb1af4f0bce5e415248d62581347d2
Its test of before-versus-after power correlation within a readout in ds004696 motivated the fixed linear pulse-trend check. No data from that publication entered this study.
- usesTotal power selection from five pulses gave greater later variance gain than variance selection at 2 to 30 Hz and 100 to 500 ms in eight STReEF SEEG patients sci:sha256:dc38214172115b215a0fb33e63839a01ff0691ec6ad04013099ce6ab0faff455
This study uses all 96 condition selections, diagonal single-pulse spectral powers, raw source pins, metadata, and licenses from this publication. It measures dependence across recording shafts, a different endpoint from pair selection by variance.
- usesFive-pulse estimates showed a greater mean 100 to 500 ms rise in repeatable power fraction at 2 to 30 Hz than at 70 to 150 Hz in eight STReEF SEEG runs sci:sha256:552984215d5744e6e94b5e864c21d391db78acd541661c7f6652caab5f35404d
This is the original archived spectral input source through the direct input publication. Its Fourier definitions and diagonal powers enabled the new shaft correlation test. Its license notice is preserved.
- usesA five-pulse check selected SEEG pairs with 60.8% mean shape agreement after contact order reversal at 20 to 500 ms in eight sessions sci:sha256:35cdaeabceeac5a3be97a54a264240386954c3bac2e4558f03b24d86d28e2bee
Two inherited MIT source helpers replay the metadata sample and retrieve metadata. The new raw check adapts the pinned range retrieval pattern. The code and source credit are preserved through the direct input publication.
- usesMean rates of shared large errors in fixed SEEG waveform forecasts exceeded an independent pulse reference before and after pulses in eight people sci:sha256:450829ea4a2474fe15175fd53492702c0ade3f9d8500b65fe074084d20dbf994
Its test of shared forecast errors in ds004696 motivated the matched before-pulse comparison. No data from that publication entered this study. The present endpoint is mean log-power correlation across STReEF shafts.
- usesdoi:10.18112/openneuro.ds005448.v1.0.0
The analysis uses STReEF ds005448 version 1.0.0, specifically the eight-patient SEEG sample and recorded pulse data.
- doi:10.1016/j.ynirp.2025.100274
- doi:10.1007/s12021-022-09567-6
Cited by
1 publicationPublic catalog entries on Sciscape.
- usesFive-pulse weights with 50 percent covariance shrinkage increased later 2 to 30 Hz SEEG log power variance by 39.0 percent at 100 to 500 ms in eight STReEF patients
We reused its 96 compact power files, fixed SEEG sample, shaft grouping rule, source metadata, source pins, and raw power verification code. We tested a new question: whether five-pulse covariance weights reduce later monitor variance. This uses the same cohort and is not an independent patient replication.