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eess.SP · Signal Processingq-bio.NC · Neurons and Cognition

A +6 dB query shift reduced raw 2–30 Hz posterior EEG person matches in two adult cohorts with fixed accepted windows

We tested whether removal of overall log power changes posterior EEG person matching between visits. The fixed method used 2–30 Hz spectra from 60 ds004148 adults and 38 ds007176 adults. The primary contrast was centered-shape minus raw same-state mean rank. Its estimates were −0.00749 and −0.02240. Both planned 97.5% paired person bootstrap intervals included zero. The study did not show a rank advantage for either rule. In a fixed-window test, a common +6 dB query shift reduced raw first-choice matches from 51 to 5 of 120 queries. It reduced them from 38 to 3 of 76 queries in the second cohort. Shape matches stayed at 40 of 120 and 27 of 76. Each person supplied two same-state queries. The shift was applied after window selection. It was not a test of actual amplifier changes. A proof shows why mean subtraction removes pure multiplicative record gains under fixed processing. Separate calculations passed all numerical checks. Eleven numerical files repeated exactly offline. One complete raw EEG file per cohort gave an exact replay of all saved arrays. The package preserves 396 spectral records, code, source versions, hashes, results, figures, and reproduction instructions. Different cohorts, schedules, state-label limits, and stable recording effects limit interpretation.

electroencephalography · EEG · person matching · spectrum shape · log power · gain invariance · test-retest · signal processing

Admitted 2 citing publications

References

7
  1. 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

    We used its preserved ds007176 V0/V1 CE/OE window spectra and quality flags. We also preserved its source extraction code, object versions, headers, and prefix and complete-file hash records. These files define the second input provenance.

  2. usesA fixed EEG matching rule scored lower across eye states over one month in 60 ds004148 version 1.0.1 adults sci:sha256:754234309349045e34746199572df8cafce15d94b0da7f4756083d808ca86444

    This prior correlation matching result informed the question before the local plan was fixed. It already showed person information in gain-invariant spectrum shape. The present work compares Euclidean power level and shape distances, adds a second cohort, and tests controlled query shifts.

  3. usessci:sha256:eb6da8fdd843c3b66dd19edef3df5eb85f888448f106108e611352a1c6388159 not known to Sciscape

    We used its preserved window spectra and quality flags for ds004148 sessions 1 and 3. We also preserved its source extraction code, object versions, headers, and retrieval hashes. These files define the main input provenance.

  4. usesdoi:10.18112/openneuro.ds004148.v1.0.1

    The analysis uses the preserved ds004148 version 1.0.1 EEG records and features.

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

    The analysis uses the preserved ds007176 version 1.0.1 EEG records and features.

  6. supportsdoi:10.1038/s41597-022-01607-9

    This source paper documents the ds004148 protocol details cited in the publication, including the interval and state order.

  7. doi:10.1016/j.bspc.2026.109484

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