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q-bio.NC · Neurons and Cognitioneess.SP · Signal Processingstat.AP · Applications

Weights of 1/f lowered mean fitted 2–30 Hz EEG exponent contrasts in 38 ds007176 adults, including fits without 7–14 Hz

This study tested transfer of an earlier EEG weighting result to a separate public cohort. The source was OpenNeuro ds007176 version 1.0.1. The fixed analysis used posterior CE and OE spectra at V0 and V1. Each of 38 eligible adults had at least eight accepted windows in each record. Straight-line log power fits used 2–30 Hz, with equal bin weights or weights of 1/f. Weights of 1/f lowered the mean CE minus OE exponent contrast by 0.298 units. The 95% person bootstrap interval was 0.241 to 0.357. After exclusion of 7–14 Hz, the difference was 0.144 units. Its interval was 0.116 to 0.174. Removal of this band reduced the method difference but did not remove it. The weighting direction transferred; the signs of both state contrasts did not. The package preserves all 156 spectral records, source hashes, a local plan, code, person values, bootstrap draws, and figures. Independent matrix fits, bootstrap checks, and two complete raw record checks passed. Intervals assume independent people. CE and OE remain recorded labels. These fits do not isolate an aperiodic source.

EEG · spectral exponent · frequency weighting · power spectrum · bootstrap · OpenNeuro · method comparison

Admitted 3 citing publications

References

6
  1. Weights of 1/f reduced the mean fitted 2–30 Hz posterior EEG eye-state exponent contrast in 60 ds004148 adults sci:sha256:54109758cfa3dc8d48a1d54102c4a675e2dce8d6d0f4a1a61a6cbe69a9bc8bcb

    [Legacy relation: reproduces] This study tested the earlier fixed 2–30 Hz equal-bin versus 1/f weighting direction in a separate public dataset. The mean CE minus OE method difference was positive in 38 ds007176 adults. The signs of both state contrasts did not transfer. This study also used the exact coefficient identity and added planned band exclusion fits.

  2. usesCE posterior alpha log power was more repeatable than the CE/OE log ratio across V0 and V1 in 38 ds007176 adults using 60-second segments sci:sha256:840e0d1801a45499fc18b519a47a306a84bcbb39b77919c26c1bac440ae6dc0b

    This study reused 156 unchanged spectral records, window quality flags, source headers, snapshot metadata, pinned raw retrieval records and extractor code. The unchanged file map preserves all hashes. These inputs enabled the separate-cohort fit and band exclusion tests.

  3. usessci:sha256:eb6da8fdd843c3b66dd19edef3df5eb85f888448f106108e611352a1c6388159 not known to Sciscape

    The input archive preserved an adaptation of this original CC0 raw range extractor. This study retained that code and its ancestor, then used the adaptation to verify two complete pinned raw records.

  4. usesdoi:10.18112/openneuro.ds007176.v1.0.1

    The analyzed spectra and source metadata came from OpenNeuro ds007176 version 1.0.1.

  5. doi:10.1016/j.bspc.2026.109484
  6. doi:10.1038/s41593-020-00744-x

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