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A fixed 50 ms phase forecast had 73.87 degrees more error with a centered target in 250 SEEG records at 7 Hz with a 1 s Hann filter

We tested a fixed phase forecast on 250 public hippocampal SEEG records from seven people. The forecast used a 1 s Hann filter at 7 Hz and a 50 ms horizon. Mean absolute phase error was 10.60 degrees against the delayed causal output and 84.46 degrees against a target centered at the future time. The same forecast was used for both targets. The mean difference was 73.87 degrees. Independent Gaussian noise gave errors of 10.37 and 83.88 degrees. The exact contribution from known inputs gave 0.19 degrees of error against the delayed target in both SEEG and noise. The low delayed-target error can occur without future voltage dependence. The effect depended on filter support and horizon. The package has all selected source files, four figures, code, an exact filter proof, and reproduction instructions. These results concern the stated filter phase. They do not establish true neural phase or a stimulation benefit.

phase forecasting · signal processing · SEEG · filter support · brain-computer interfaces · causal filtering

Admitted 2 citing publications

References

5
  1. usesZero sample runs continued after all 932 marked stimulation intervals in 250 selected hippocampal SEEG records sci:sha256:08b79fb28c0ad8ae5ce5f97718a82ab9495d0a888ebc9474e04e519df67d70f3

    This publication defined the inherited record timing rules and source selection ledger. Its rules permitted tests on intact voltage before stimulation.

  2. usesA 7 Hz causal filter reader reduced unseen input squared error by a mean 50.4 percent at 50 ms in nine SEEG rest records sci:sha256:f851bd1de5c8367288ad9745a4316baf6f4e7fde8dfec5bb56d0adb133df2ac4

    This publication supplied the comparison concept that separates an exact known causal filter contribution from unseen future voltage. We used that concept for two target time supports and independent noise.

  3. usesAn exact check gave more 7 Hz phase certificates after SEEG gaps in 250 records with bounded missing voltage sci:sha256:30f5c0e1c4269dd470b69e543ec39d5cf9cefcb91eac8e1b9a828f4dc9cbe095

    This publication supplied the 250 selected native hippocampal SEEG records, source receipts, EDF reader, and retrieval code. We kept its cohort and made no new signal selection.

  4. usesdoi:10.18112/openneuro.ds007095.v1.0.0

    This is the exact OpenNeuro ds007095 version 1.0.0 analyzed in the publication; the retained source metadata records its CC0 license.

  5. doi:10.3389/fnins.2026.1815732

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