An early timing check selected SEEG pairs with higher mean 10 ms peak precision in a 20–500 ms window in eight patient sessions
We tested 886 remote bipolar SEEG readout pairs at 86 stimulation sites in eight patients with epilepsy. We used public OpenNeuro ds004696 version 1.0.1 voltage traces. A shape check used the first two and next three pulses. An added timing check required their largest absolute peaks to differ by at most 10 ms. We scored the first-five and final-five mean peaks in a 20–500 ms window. The added check selected 140 pairs, compared with 196 for the shape check. The equal patient mean timing precision was 88.4% and 77.0%. The mean difference was +11.5 percentage points. Its descriptive patient bootstrap interval was +4.4 to +18.0 points. Of 183 selected pairs with later shape correlation at least 0.8, 40 failed the timing target. These within-session results do not test an online BCI. The package preserves exact means, all scores, source hashes, four figures, and code. A finite-grid proof and a counterexample show why shape correlation alone cannot bound peak time.
SEEG · dominant peak · peak timing · waveform shape · brain-computer interface · electrical stimulation · repeatability · epilepsy
References
4- usesA five-pulse check selected more repeatable bipolar SEEG pairs within eight epilepsy patient sessions sci:sha256:b5b7963746f5c6d2a2a8f7844ec590732a4eb152bc7a70979b3bc95c3e27820f
We used its eight-patient bipolar cohort, source manifest, pulse rules, and processing audit. We reloaded all source voltage files and checked its shape scores before measuring dominant-peak timing.
- usesdoi:10.18112/openneuro.ds004696.v1.0.1
This exact OpenNeuro version supplied the eight processed voltage files used in the analysis.
- doi:10.1523/JNEUROSCI.2201-22.2023
- doi:10.1371/journal.pcbi.1011105
Cited by
7 publicationsPublic catalog entries on Sciscape.
- usesTemplate alignment did not show a clear gain over a local peak in joint timing tests on 37 selected SEEG pairs from eight sessions
We adapted the range download routine. This work also supplied the original frozen cohort and pinned source code records through the parent archive.
- usesA fixed 40 Hz projection increased mean later pulse error in eight SEEG sessions used in earlier tests
We use its exact first-two, next-three, and final-five voltage means for 886 pairs in eight sessions. These means permit a new fixed temporal projection test without a large source download.
- usesEnergy center times met a 10 ms repeatability target less often than peak times in eight limbic SEEG sessions with a 20–500 ms window and a shape check on the first five pulses
We used the exact mean waveforms and cohort records. We compared new energy center scores with peak scores on the same readouts. This is a new analysis of the same cohort.
- usesA fixed shape gate did not establish higher 10 ms peak agreement in 140 selected SEEG pairs
We used its early selection rule and its known limit on shape correlation and peak timing. This study measures individual later-pulse output yield and timing agreement.
- usesPeak margin selection gave higher 10 ms agreement than shape ranking after a five-pulse shape check in eight SEEG sessions
The earlier peak study supplied the mean-waveform peak definition and the 10 ms timing target. We kept those definitions for the new matched-count selection comparison.
- usesThe earliest peak rule gave a mean error of -2.32 ms after six-bit encoding of 140 five-pulse SEEG means from eight patients
We used the exact pulse mean arrays, cohort tables, early selection rule, and retrieval code. We tested a new scalar encoding question on these waveforms. The new code reproduced all 886 early selection labels. A fresh public source check reproduced every preserved sub-05 array.
- usesMeans of five pulses had higher 10 ms peak time agreement than single pulses in 140 selected SEEG pairs from eight patient sessions, within a 20–500 ms window
We used its fixed cohort tables, source records and download code. Fresh source voltage reproduced its group means. We added individual pulse timing tests on the same early and later pulse rows.