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q-bio.NC · Neurons and Cognition

Fixed 1 to 80 Hz SEEG directions had lower mean correlation between interictal files than within files in 36 patients

We tested whether fitted SEEG signal directions keep their correlation in separate interictal blocks. We used two public files from each of 36 patients in OpenNeuro ds004100 version 1.1.3. We fitted the first canonical direction for 3,325 pairs of contact paths at 1 to 80 Hz. We kept the directions and signs fixed in each test block. The patient mean correlation was 0.2692 within files and 0.2426 between files. The mean difference was 0.0267, with a 95 percent patient bootstrap interval of 0.0187 to 0.0364. The difference was positive in 35 of 36 patients. With separate filter inputs, the mean difference was 0.0243. All 72 source covariance files were rebuilt exactly from pinned public raw ranges. The package gives covariance inputs, fitted directions, results, checks, and code. The result describes recorded signal association. It does not prove neural communication, a time effect, or clinical benefit.

stereo-EEG · canonical correlation analysis · signal transfer · interictal EEG · epilepsy · patient bootstrap

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References

6
  1. usesIn 36 patients with fixed SEEG contrasts, mean change in estimated canonical correlation spectra was larger between files than between adjacent blocks at 1–80 Hz sci:sha256:1217c177ec55b99e3867daa6135687900230630b32c8a790c700777fcc5adf29

    We used all 72 source covariance files, the contact selection, metadata, sample signals, and retrieval code. We tested fixed fitted directions instead of sorted canonical spectra.

  2. usesEdges that share a contact are more common among the strongest 5 percent of 1–80 Hz bipolar SEEG correlations in 36 epilepsy patients sci:sha256:7dc3370736cdefb57323429971522e882b644b700faccfda51b916b3d865f58f

    We used the original 36-patient SEEG selection and pinned public range recipe, as preserved by the direct input source. We rebuilt all source covariance values exactly.

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

    We used the imported code that restores covariance and builds fixed contrast paths without bridging gaps. We tested transported fixed directions in the same contrast spaces.

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

    The analyzed two interictal files from each of 36 patients came from OpenNeuro ds004100 version 1.1.3; the source metadata records this version-specific DOI and CC0 license.

  5. doi:10.1093/braincomms%2Ffcae165
  6. doi:10.1038/s42003-024-05869-4

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