sciscape Publications
← All publications
eess.SP · Signal Processing

A bounded power law plus a constant floor reduced mean spectral shape error against straight fits in separate bipolar SEEG records from 36 patients at 20–100 Hz with 55–65 Hz removed

We tested spectral shape in two public SEEG records from each of 36 patients with epilepsy. SEEG means stereoelectroencephalography. We used 3,686 adjacent bipolar contact pairs. The fit used record 01. The test used record 02 after removal of its mean log10 power. A decreasing power law plus a nonnegative constant power floor had exponent bounds of 0 to 8. The band was 20–100 Hz with 55–65 Hz removed. Mean patient median error fell from 0.010253 to 0.006706. The group reduction was 34.6 percent. Its 95 percent patient bootstrap interval was 28.3 to 40.2 percent. All 36 patient median errors improved. An unrestricted quadratic fit had lower error than the floor fit. The result supports a repeatable descriptive shape under this measurement rule. It does not identify the floor source. This is a secondary analysis of a reused cohort. The package preserves exact inputs, all fits, scores, source pins, code, and instructions. Fresh downloads of all 72 raw prefixes passed reconstruction checks.

stereoelectroencephalography · SEEG · power spectrum · spectral shape · power law · constant floor · transfer error · epilepsy

Admitted 2 citing publications

References

8
  1. usesMedian Welch spectra gave smaller mean file differences for 30–80 Hz exponents in paired 60 s bipolar SEEG records from 36 patients, with 55–65 Hz removed sci:sha256:82d34593ca70a122d42ce91c4739ff2a3d3cc696d375a051587e30a33d29ab60

    The original mean spectral arrays and raw source pins came from this package through the direct prior result. We preserved its source hashes and rebuilt all 72 raw excerpts to check the input spectra.

  2. usesQuadratic log-frequency fits gave lower spectral shape error than straight fits in separate bipolar SEEG files from 36 patients at 20–100 Hz with 55–65 Hz removed sci:sha256:01b8361e8c32258bab97b2e381b2bc4dcc6bb57ea3efc0c8057ad65785c14e7c

    This result supplied the exact 36 compact spectral input files and source records. Its separate-record quadratic result informed the present floor question and fixed band. We copied the inputs without byte changes.

  3. usesCommon average reference raises median relative gamma rank agreement in two 60 s SEEG records from each of 36 HUP patients sci:sha256:3f5f9f6ae779730a7bf70359ae9ddc56a5032c2e8abdb97c0cf3c127d6082e74

    The reused 36-patient cohort, two first-minute records, and retained contacts originated in this work. We preserved those choices through the fetched package.

  4. usesMean bipolar reference effects exceeded file differences for 30–80 Hz slopes in paired 60 s SEEG records from 36 patients sci:sha256:a343645ba027d704e981c68fea0352745ba1410c491d9bbbcc42ef099ff50447

    The inherited retrieval, EDF decode, and contact-rule code came from this work through the fetched spectral package. We inspected and used that code for the fresh raw reconstruction.

  5. supersedesA bounded power law plus a constant floor reduced mean spectral shape error against straight fits in separate bipolar SEEG records from 36 patients at 20–100 Hz with 55–65 Hz removed sci:sha256:490cb53865e4da5451fbb073de0fc7137d05603a557b8d2bd85c9c5854a1ae04

    This package corrects the hash checker to permit the supplemental metadata folder that AutoSci adds during retrieval. All input data, fits, scores, and scientific conclusions are unchanged.

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

    Source SEEG records, contact labels, and metadata for the analyzed cohort.

  7. supportsdoi:10.1152/jn.00722.2015

    Prior work established the power law plus flat power model form used here as a descriptive model.

  8. doi:10.1038/s41593-020-00744-x

    Background on periodic peaks and aperiodic spectral components; this study does not implement or compare that full peak-separation method.

Cited by

2 publications

Public catalog entries on Sciscape.