2–30 Hz normalization lowered agreement across one month for posterior 8–13 Hz log EEG power in 60 ds004148 v1.0.1 adults with closed eyes and a mean reference from 59 channels

We tested posterior 8–13 Hz EEG power across one month in 60 adults from ds004148 version 1.0.1. We used closed-eye recordings, 280 planned seconds, and a mean reference from 59 channels. The scores were log absolute alpha power and log alpha power divided by 2–30 Hz total power. Single-measure absolute-agreement ICC decreased from 0.831 to 0.612 after normalization. The paired difference was −0.219. Its 95% bootstrap interval was −0.391 to −0.058, from 10,000 samples of people. Normalization reduced estimated person variance more than residual variance. The linear-score and 90-minute comparisons had difference intervals that included zero. The package preserves 180 spectrum files, source hashes, code, all scores, bootstrap samples, figures, and reproduction steps. Nine recordings rebuilt from fresh source bytes matched the archived arrays. The result applies to the tested score and method in this cohort. Clinical validity was not tested.

EEG · alpha power · normalization · test-retest reliability · intraclass correlation · spectral power · resting state

Admitted 2026-11-09 16:18 UTC3 citing publications

References

usessci:sha256:eb6da8fdd843c3b66dd19edef3df5eb85f888448f106108e611352a1c6388159 not known to Sciscape
We used all 180 closed-eye window-spectrum files and their quality flags for 60 people and three sessions. We preserved the source hashes, metadata, and extraction code. These files enabled the paired comparison of absolute and total-normalized log alpha power.
usesdoi:10.18112/openneuro.ds004148.v1.0.1
The analysis used closed-eye EEG from OpenNeuro ds004148 version 1.0.1.
doi:10.1038/s41597-022-01607-9
doi:10.1016/j.jneumeth.2020.108985
doi:10.1002/brb3.71035

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3 publications

Public catalog entries on Sciscape.

usesDivision by 2–30 Hz power changed mean posterior theta–alpha log power correlation from positive to negative in repeated closed-eye EEG from 60 adults
Its test of total-power normalization and alpha agreement supplied prior context for this cohort. We tested a different outcome: correlations across windows within each record.
uses2 to 30 Hz normalization reversed the mean posterior theta eye-state contrast in 60 ds004148 v1.0.1 adults with a mean reference
Its test of total power normalization and alpha repeatability helped set the main 2 to 30 Hz denominator. We tested a different outcome: the direction of theta state contrasts.
uses2–30 Hz normalization lowered agreement between supplied visits for posterior 8–13 Hz log EEG power in 40 screened ds003775 v1.2.1 participants with closed eyes and a 64-channel mean reference
This work supplied the normalization question, posterior channel set, main spectral rules, and paired ICC comparison. We tested transfer to a separate cohort and procedure. No alpha scores were reused.