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eess.SP · Signal Processing

Separate early phase corrections had higher mean later error for eight targets in seven SEEG rest records with an assumed 50 ms delay

We tested whether separate early phase corrections improve later simulated pulse timing. We used 28 early-selected bipolar pairs from seven public SEEG rest records in OpenNeuro ds006065 version 1.0.0. The reader used 0.5 seconds of past voltage and an assumed 50 ms delay. Eight desired phases had separate event schedules. Both rules used the same early 15-degree correction grid. Separate corrections reduced mean early error by 2.156 degrees. Mean later absolute phase error was 69.483 degrees with one shared correction and 70.088 degrees with separate corrections. The separate-minus-shared change was +0.605 degrees. Its descriptive 95% whole-person bootstrap interval was [-0.280, +1.488] degrees. Two of seven people improved. Reference-length checks gave similar results. An added zero-sum filter check left all 252 early grid choices unchanged. The evidence gives no clear mean later gain under the tested conditions. This is an exploratory test on a reused cohort. It measures arrival error against an offline phase definition, with no delivered pulses. The package preserves exact voltage, full-source checks, complete event records, code, tables, three figures, and repeat instructions.

phase estimation · stereoelectroencephalography · signal processing · pulse timing · calibration

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References

6
  1. usesA zero-sum filter removed constant-baseline effects on interior theta phase targets in 36 public SEEG files sci:sha256:14f4384bd9f6a2ceff410544533d4f58ffe6f11ece71fdf90c67beca78708b48

    A citation audit after the primary results identified this zero-sum filter method. We used h minus mean(h) in an added check, first on frozen schedules and then with early recalibration. All 252 discrete choices were unchanged. The added plan and its timing are preserved.

  2. usesDelay compensation reduced mean simulated pulse phase error in seven SEEG rest recordings with an assumed 50 ms delay sci:sha256:138047da1c20ac8429cec6d8ed2face926ee8dd1ead90581a587d86101806445

    This study uses its delay-aware upward-crossing and accepted-event interval benchmark design. The current code implements that rule for eight desired phases and tests two new early event-score correction searches on later data.

  3. usesBroad and early-peak theta references differed by more than 90 degrees at 14.1 percent of later times in seven SEEG rest records sci:sha256:6a2ec386628e56b4af60cbe7e07b90175f3f240c38ce759582e3bdc985b29af2

    We read its broad-band versus early-peak phase-reference audit after the primary results. It supplies context for the stated reference-scope limit. We did not use its phase arrays, code, or outcomes to set the primary method.

  4. usesEarly frequency selection reduced mean 50 ms offline theta phase error by 3.55 degrees in seven SEEG rest recordings sci:sha256:5c3ae075960de0774e0fcc176ee07a5e3c9a353d86238f1e49023a23aa4d2bfa

    This study uses its exact seven voltage files, 28 early-selected bipolar pairs, early frequencies, source metadata, retrieval code, and unchanged main FIR reference function. Fresh complete raw downloads and reconstruction verified these inputs. The new test compares one shared correction with eight separately fitted corrections.

  5. usesdoi:10.18112/openneuro.ds006065.v1.0.0

    This is the exact OpenNeuro ds006065 version 1.0.0 source used for the seven rest records and the saved input traces.

  6. doi:10.1038/s41467-025-59417-7

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