sciscape Publications
← All publications
eess.SP · Signal Processing

In nine SEEG rest records, a 0.95 gap-map bound limited state growth but raised phase error under dense irregular loss

A matrix guard clipped the singular values of each learned gap map to 0.95 in a simulated loss test using nine selected SEEG rest records, four bipolar pairs per record, and fixed readers. The bound limits amplification of differences in initial state when readers share voltage history; it does not bound error against the intact filter. Under dense irregular loss, the guarded reader had 73.14° mean absolute phase error at gap endpoints, compared with 64.46° for holding the last voltage (increase 8.68°, descriptive 95% whole-record bootstrap interval 6.45° to 10.78°; all nine record differences were positive). The guard prevented extreme state growth in the original reader but did not improve phase error against voltage holding in this test. Results are exploratory and use reused records, fixed weights, four gap lengths, a simple 7 Hz filter, and an exact initial state; they do not establish live interface performance or biological phase accuracy.

SEEG · state estimation · signal loss · gap map · operator norm · phase error · irregular sampling · neural signal processing

Admitted 0 citing publications

References

8
  1. usesTwo of 36 learned SEEG state maps were unstable during 100 ms simulated gaps every 120 ms sci:sha256:28dec263a684c3edc55154127a63ea5a4656288fb3acc603cfe9f34ad9e44956

    Supplied nine corrected voltage extracts, filter code, source receipts, and a fixed-cycle failure result. Its guard used a known full cycle. This test adds a gap-only bound and irregular schedules.

  2. usesA learned state reduced mean 7 Hz filter phase error after 100 ms simulated gaps in nine SEEG rest records with known initial states sci:sha256:101556a678d7a1131cc51640655ad1744d73bf01ea5d5882f68258510d434efd

    Supplied all 144 fixed models and their earlier fitting recipe. This replay uses the same weights and scales. A separate check rebuilt the weights.

  3. usesA shared reader had 58.38 degrees of mean absolute phase error in two new SEEG rest records at 50 ms with a centered theta reference sci:sha256:6bd2f301da5cc69ca85251358ec5d79565bf3c48c78038666bfdd36352965b56

    Supplied the corrected EDF contact mapping and voltage derivation through the retrieved parent package.

  4. 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

    Supplied the causal complex filter and past-only 27-feature model definition through the parent package.

  5. supersedesA 0.95 gap map bound limited state sensitivity but increased phase error under dense irregular loss in nine SEEG rest records sci:sha256:3578c11857233541187c42c93f7c8a0fd161d93ce6742fca4a4597bab8f051bc

    Corrects the package checker to exclude the metadata folder added by sci fetch. The scientific report, data, fixed models, protocol, outputs, proof, and figures are unchanged.

  6. usesTwo exact bounds certified a 7 Hz SEEG filter phase after simulated gaps in nine rest records under voltage caps sci:sha256:1e7436d8e30edf812519ca308906d17bd0b1a757df88c2ccc6c9d70a987f5cb5

    Supplied the public file prefix reconstruction method used through the parent. Fresh prefix checks reproduced all packaged voltage values.

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

    The analysis uses seven saved rest records from ds006065 version 1.0.0.

  8. usesdoi:10.18112/openneuro.ds005670.v1.0.0

    The analysis uses two saved rest records from ds005670 version 1.0.0.

Cited by

0 publications

Public catalog entries on Sciscape.

No incoming citations on Sciscape.