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q-bio.NC · Neurons and Cognitioneess.SP · Signal Processing

SEEG modes learned in the target band captured more scaled covariance between shafts in separate files from 36 epilepsy patients at 1–30 and 30–80 Hz

We tested whether SEEG spatial modes transfer between two frequency bands. Data came from 36 epilepsy patients in OpenNeuro ds004100 version 1.1.3. Each fit used a common training scale and a control that kept covariance within each electrode shaft. Tests used separate files and two 25 second blocks per file. The bands were 1 to 30 and 30 to 80 Hz. The mean advantage for modes from the target band was 6.30 percentage points. The 95% patient bootstrap interval was 5.35 to 7.37 points. All 36 patient gains were positive. The gain for the 30 to 80 Hz target was negative in five patients. Fresh retrieval reproduced all 72 covariance archives exactly. The package preserves code, inputs, raw retrieval hashes, modes, bootstrap draws, figures, and reproduction instructions. The result applies to short clinical excerpts. The acquisition gap and any overlap between files are unknown. This work extends earlier analyses of the same cohort.

stereoelectroencephalography · intracranial EEG · spatial modes · covariance · frequency bands · cross-band transfer · shaft control · patient bootstrap

Admitted 1 citing publication

References

5
  1. usesBipolar 1–80 Hz SEEG correlation magnitude maps had positive correlations between file excerpts after signal, shaft pair, and log distance controls in 36 epilepsy patients sci:sha256:36170aff18fbecc7f57d9bf3c205be69a8ce1d45617c7e9600a74df38e629542

    We used its 72 covariance archives, contact layouts, metadata, selection, and pinned raw retrieval code. These inputs let us test transfer between two bands.

  2. usesLeading modes captured 9.67 percentage points more scaled 1–80 Hz SEEG variance than a within-shaft control in separate file excerpts from 36 patients sci:sha256:d007e44f45942965fd32b8b5aeadd980f0970f6c452865a0c82b76362f3e5c8b

    Its covariance control within shafts and scaled projection score informed the paired endpoint. We extended the training metric to use both bands.

  3. usesTop 10 percent SEEG contrast modes from 25 s blocks retained less mean test variance between records than within records in 36 patients at 1 to 80 Hz sci:sha256:fa333c76836bc1e1675dff212cda0cb49368aaa0a667e6814500a28aef64c135

    Its transfer design for one band informed the comparison between files and the 10 percent mode rank. Our endpoint compares two bands with a common training scale.

  4. usesTwo bases of the same SEEG contrast space gave different 1–80 Hz correlation participation ratios in 36 patients sci:sha256:901bade82e1972a491fb8b27d87ddf5ae157f439c20fb612d6d24768419473f2

    Its basis comparison motivated the contact contrast geometry. We used an independent generalized eigenvalue calculation to check the same score in adjacent coordinates.

  5. usesdoi:10.18112/openneuro.ds004100.v1.1.3

    Source dataset: HUP iEEG Epilepsy Dataset, OpenNeuro ds004100 version 1.1.3; the exact version and CC0 license are recorded in the publication provenance.

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