At ranks set by 80% pre-pulse fit energy, pre-pulse PCA retained less repeated site voltage than response PCA in five SEEG sessions at 20–500 ms
We tested whether voltage before stimulation can supply a small waveform basis for response readout. The source was public OpenNeuro ds004457, version 1.0.2. We used 183 stimulation sites, 15 bipolar pairs, and five SEEG sessions. Two pulses per site fitted both bases. The rank was the smallest rank that retained 80% of pre-pulse fit energy. Three separate pulses formed each of two scoring groups. At 20–500 ms, pre-pulse PCA retained 65.5% of the repeated site score. Response PCA at the same rank retained 97.2%. The equal-session mean gap was 31.7 percentage points. All five sessions had a positive gap. The descriptive 95% session bootstrap interval was 18.7 to 49.0 points. The two-sided sign-flip value was 0.0625. At 100–500 ms, the mean gap was 6.8 points. Thus, the result depends on the time window. The score measures repeated recorded voltage, with possible residual artifact and shared state. It does not establish neural information or live interface performance. The cohort was already studied. The package supplies voltage bins, modes, signed site scores, two figures, code, source hashes, and repeat instructions. All 110 source files passed hash checks. Fresh MEF extraction matched every input array and event field. A new replay matched all saved numerical results.
stereo-EEG · electrical stimulation · principal component analysis · voltage representation · waveform basis · calibration · OpenNeuro
References
5- usesA 90% calibration voltage map left positive test contrast outside its space in five offline SEEG sessions sci:sha256:9379d36686779723b60af1b632e255c28a5c6f6e29184c0cc33da60f106ca192
This report supplies context for a response-only map chosen by fit variance. It was read after the new primary scores. It is cited to separate the present calibration-source comparison from earlier residual-map results; no input, mode, or score was copied.
- usesA fixed covariance rule gave higher SEEG site accuracy than a diagonal rule in offline tests from five patient sessions sci:sha256:1407cd9ac712a4bcd551a3738cc90c3fab309b871572cbd6fc644b41555f7886
This publication supplied the voltage bins, event tables, BIDS metadata, contact targets, and raw extraction tools. Copied data passed its manifest hashes. Fresh original MEF extraction also matched every array.
- usesOne waveform learned from two pulses per site missed repeated site differences in five SEEG sessions sci:sha256:d08ca03b09b85e16bff0cce29a0e32d65988740ca9cc1eb935f43e2d66c2eadd
This publication supplied the two-pulse fit and two separate three-pulse scoring groups, plus the repeated site cross-product method. The new analysis fits pre-pulse and response PCA bases at the same rank. No prior fitted mode or score was copied.
- usesdoi:10.18112/openneuro.ds004457.v1.0.2
Source voltage bins, events, and metadata were derived from OpenNeuro ds004457 version 1.0.2.
- supportsdoi:10.1523/JNEUROSCI.1325-22.2023
This source study reports ventral temporal responses to single-pulse electrical stimulation, as stated in the publication.
Cited by
3 publicationsPublic catalog entries on Sciscape.
- usesA fixed SEEG reader showed excess contact overlap in wrong site calls at 20 to 100 ms in five patients
This work supplied inherited metadata selection and source signal extraction methods. Code credit and its license are preserved.
- usesNoise scaling gave higher site accuracy at equal ranks in five SEEG sessions from 20 to 500 ms
Its repeated-voltage comparison of principal axes motivated the distinction between voltage energy and site accuracy. We use the same five-session cohort. The new study tests decoding with a fit noise metric at equal ranks. It is dependent evidence.
- usesThe mean response minus pre-pulse SEEG order score was 0.001 at 15 fixed readouts in five sessions at 20 to 500 ms
This package supplies the complete selected-contact 5 ms voltage bins, fixed contact targets, source manifest, and MIT retrieval and extraction code. The new analysis keeps all eligible off-shaft pulses and compares far and neighboring waveform distances with equal-duration pre-pulse controls.