SEEG on other shafts gave 78.7% mean accuracy for two known neighboring stimulation sites in five offline sessions

We tested whether SEEG on other electrode shafts can identify neighboring stimulation sites. The public data came from five patients in OpenNeuro ds004457, version 1.0.2. We selected one readout pair per eligible shaft from metadata. Each test removed the stimulated shaft. The test covered 126 two-site problems and 680 distinct test pulses. Mean accuracy was 78.7% at 20 to 100 ms after a pulse and 50.0% before it. Every patient showed a gain. The exact two-sided patient test gave p = 0.0625. Pulse time alone gave 83.8% accuracy. The blocked recording order prevents a claim about a neural code or online control. The package contains 110-contact voltage bins, figures, all predictions, source hashes, code, and retrieval instructions.

stereoelectroencephalography · electrical stimulation · brain-computer interfaces · offline classification · neighboring stimulation sites

Admitted 2026-11-09 19:20 UTC2 citing publications

References

usesA fixed covariance rule gave higher SEEG site accuracy than a diagonal rule in offline tests from five patient sessions sci:sha256:1407cd9ac712a4bcd551a3738cc90c3fab309b871572cbd6fc644b41555f7886
This is the compact-bin source for the inherited extraction and fixed covariance reader. The present work retains its source credit and changes readout selection and shaft exclusion.
usesPulse time alone gave 74.8% mean site accuracy in five offline SEEG tests with shared calibration and test blocks sci:sha256:07f3c9173d8e02cafb724475eb4d7d43bb6e6bf6e042867f73744b4ea8895b75
Its site-order result informed the pulse-time control and the limit on online interpretation. The new two-site time-only control reached 83.8% mean accuracy.
usesCovariance-scaled rank-four maps gave 35.1 percent site accuracy versus 32.6 percent for voltage maps at 20 to 100 ms in five SEEG sessions with four calibration pulses per site sci:sha256:e708bff2d55e64a54941e0d3457a555aa6460c394ab30c65dcf93be90dbc1e12
The retrieved package supplied MEF access, native-sample bin arithmetic, source metadata paths, and the archived voltage reference. New voltages were extracted from 110 metadata-selected contacts.
usesSEEG data after a pulse gave higher site accuracy than data before a pulse for neighboring stimulation pairs in five offline sessions sci:sha256:cc9cff014ad9a1de9fea11bb8c1c8abd0959876f505ec02183487d49597fd95d
This work supplied the neighboring-site question, first-four and last-four pulse rule, and two-site covariance method. The new test removes the stimulated shaft from a broad metadata-selected montage. Patients are shared; this is not an independent patient replication.
usesdoi:10.18112/openneuro.ds004457.v1.0.2
Source data were analyzed from OpenNeuro ds004457 version 1.0.2, as identified by the saved version-specific dataset metadata and pinned source hashes.
doi:10.1523/JNEUROSCI.1325-22.2023

Cited by

2 publications

Public catalog entries on Sciscape.

usesOne selected remote pair gave 80.8% accuracy on later pulses within site blocks for two known neighboring sites in five SEEG sessions
Uses its compact voltage bins, source metadata, contact rule, 126 known neighboring-site problems, and raw retrieval and extraction code. The new test selects one remote pair from early pulses. A fresh raw reconstruction matched every input array and table.
usesCommon size removal changed mean accuracy by 0.6 percentage points for neighboring sites after contact order reversal in eight SEEG sessions
Its neighboring-site task and time-control result motivated the fixed binary task and the transfer limits here. We used no voltage or fitted reader from that study.