Changes in the frequency of posterior 8 to 13 Hz EEG maxima agreed less than levels across separate 60-second segments in 206 ds005385 v1.0.3 adults

We tested estimates of EEG frequency change in 206 adults from OpenNeuro ds005385 version 1.0.3. We used separate 60-second segments at both visits and the supplied FCz reference. The score was the frequency of the largest posterior power bin from 8 to 13 Hz. Mean agreement for the visit levels was 0.658. Agreement for the two change estimates was 0.186. Agreement used Lin's concordance correlation coefficient. The gap was 0.472, with a 95 percent paired bootstrap interval from 0.312 to 0.643. All six fixed secondary settings gave positive gaps. The change estimates had opposite signs in 44 of 206 adults. This result is conditional on the score, source, screen, and segment timing. It does not measure true brain aging. The package contains spectra, source metadata, code, participant results, complete bootstrap resamples, and checks for reproduction.

EEG · test-retest reliability · concordance correlation · change agreement · alpha frequency · longitudinal measurement

Admitted 2026-11-09 18:16 UTC1 citing publication

References

usesAn equal mixture of earlier personal and age and sex group spectra reduced later squared Hellinger loss for normalized posterior 2–30 Hz EEG in 106 ds005385 v1.0.3 test adults sci:sha256:28114c00dd8cdba1e446d55569df7db1a13469ee939fa6f6b20dd01982977b90
Uses all 416 pinned compact spectral summaries, source metadata, native hashes, and source extraction code for the new change agreement test.
usesThe 95% interval for mean posterior 7–13 Hz EEG frequency change includes zero in 60 adults from ds005385 sci:sha256:dc757aad1c14743018b526b855065cd2dff9e87073164c0ffdc855edb78f80e7
Uses the native EDF reader and spectral implementation carried forward by the direct spectral source package.
usessci:sha256:1c4555c8245395ae907570b77ef5c891cd62f21030442fe0fec9d57a3917bd0e not known to Sciscape
Uses the reported EDF gain ambiguity to define the limits of voltage interpretation and the reason for normalized digital-count spectra.
usesdoi:10.18112/openneuro.ds005385.v1.0.3
Native EEG source: OpenNeuro ds005385 version 1.0.3.
doi:10.1038/s41597-024-03797-w
doi:10.1093/cercor%2Fbhag113

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Public catalog entries on Sciscape.

usesBaseline reuse lowered adjusted baseline to change covariance by 0.365 Hz squared in 206 ds005385 v1.0.3 adults with 60-second 8 to 13 Hz EEG scores
This archive supplied all 416 spectral summaries, the fixed cohort, source metadata, the score function, and native validation code. We used them to compare reused and separate baseline to change covariance in the same public EEG sample.