Cycle components of SEEG pulse size ratios were invariant to fixed scalar site gains in six sessions
We tested whether SEEG pulse size ratios retain repeatable structure after fixed site gains are removed. The method projects reciprocal log RMS size ratios onto a graph cycle space. The projection is invariant under positive fixed scalar stimulation and readout gains. Six selected OpenNeuro ds004696 v1.0.1 sessions gave 168 reciprocal edges and 127 cycle dimensions. Random gain checks changed the components by at most 1.84e-14. Earlier pulse groups gave lower later error than a zero forecast in four sessions. The mean after-pulse gain above the before-pulse control was 0.193 square log units; the exact person sign-flip p value was 0.125. The prediction result was inconclusive. Mean individual relative skill was negative. The package preserves a general audit tool, exact pulse products, four figures, source code, provenance, checksums, and run instructions. A fresh full source check and a byte-identical rebuild passed for subject 08. The scalar model does not establish a neural cause or online interface benefit.
stereoelectroencephalography · SEEG · brain-computer interfaces · electrical stimulation · calibration · graph cycle space · scalar gain invariance · pulse response size
References
5- usesFive direct calibration pulses gave lower voltage size prediction error than an earlier reverse measurement in seven SEEG sessions sci:sha256:12309876475890f517cc321e1459a68ba3a8ad6a42054ad3d9f4a8a5e33c5e3c
Used its exact chronological first-five and final-five SEEG pulse Gram products for all eight people, source metadata and hashes, and reviewed download, audit, and extraction code. The new analysis tests scalar site gain removal with graph cycle projections.
- usesA five-pulse check selected more repeatable bipolar SEEG pairs within eight epilepsy patient sessions sci:sha256:b5b7963746f5c6d2a2a8f7844ec590732a4eb152bc7a70979b3bc95c3e27820f
Used the source extraction method preserved by the pulse-product publication. Its spatial rules, reference cancellation rules, pulse selection code, and public source provenance define the input to this calibration audit.
- usesdoi:10.18112/openneuro.ds004696.v1.0.1
The analysis uses the public processed SEEG data from this exact OpenNeuro dataset version.
- doi:10.1523/JNEUROSCI.2201-22.2023
- doi:10.1007/s10107-010-0419-x
Cited by
7 publicationsPublic catalog entries on Sciscape.
- Free factors for both cells left three strength contrasts in 88 reciprocal mouse V1 pairs
Prior application of cycle projections to remove fixed scalar gains from neural stimulation measurements.
- usesOne fitted value per cell reduced log ratio test error by 21% and 11% in two mouse cortical maps of detected spikelets
We apply its scalar source and readout gain interpretation to a new cellular dataset and test prediction on excluded pairs. No source data or code are reused from that study.
- usesA graph correction reduced reverse voltage size error in six offline SEEG maps at 20 to 500 ms
We used its reciprocal log ratio and node model definitions. We added a separate test that excludes each predicted pair from the fitted graph.
- Free cell terms in each direction leave no visual matching contrast in 92 detected mouse V1 connections
This related neural method uses cycle projections to remove fixed site gains. We do not reuse its code.
- usesWith free cell gains, changes within 1.25 sample standard errors allowed a reciprocal fit to 109 selected C. elegans response pairs
We extend its scalar input and readout gain interpretation of reciprocal log-ratio cycle components. We add a worm atlas test, minimum change factors, and sample-SEM band certificates. No code is copied.
- usesGraph fits from past pulses reduced mean squared log error by 30 percent for reverse SEEG forecasts at 20 to 500 ms in six reused sessions
This publication supplies the exact-contact graph definition and the equal-weight node-ratio model. We use those definitions with a time cutoff and an explicit rule for disconnected endpoints.
- supportsAt Laplace rates of 0.2 and 1 per second, removing four of 106 C. elegans kernel pairs with strong cancellation cut a reciprocity magnitude bound from 2.60 to 1.39
Earlier scalar site-gain cycle audit of human stimulation responses.