2–30 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

We tested division of alpha EEG power by total EEG power in a separate repeat cohort. We used all 84 raw visits from the 42 repeat participants in OpenNeuro ds003775 version 1.2.1. The fixed screen retained 40 participant pairs. The absolute-agreement ICC was 0.953 for absolute log alpha power and 0.860 for normalized log alpha power. The paired difference was -0.093, with a 95 percent participant bootstrap interval [-0.193, -0.034]. The paired 95 percent interval was below zero. The package preserves per-window spectra, quality measures, source hashes, code, all fixed checks, and instructions. The result applies to this cohort and these signal rules. It does not test clinical accuracy. Of nine sensitivity estimates, 9 were lower after normalization. 4 intervals included zero. The supplied acquisition dates disagree with the paper visit interval. The true elapsed time was not verified.

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

Admitted 2026-11-09 18:08 UTC4 citing publications

References

uses2–30 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 sci:sha256:bedaa0bd2c9d4e6428ac7e7989a9b8ea1f23391c3114328c68a9ab33a200b565
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.
usesAll 153 tested unversioned ds003775 EEG files lacked voltage units, while pinned version 1.2.1 files declared microvolts sci:sha256:b96d53b174e1a90e7ab502b44e675840d2d590f9ab3f4456b4c2065aacf96dd8
This work supplied the pinned ds003775 version 1.2.1 raw source index, source metadata and hashes, EDF header and unit reader, and pinned headers for the date audit. We retrieved all 84 selected full raw files again and checked their identity. The MIT code notice is preserved.
usesdoi:10.18112/openneuro.ds003775.v1.2.1
Source dataset, exact version used for the 84 analyzed raw visits.
supportsdoi:10.1016/j.dib.2022.108647
Source cohort and acquisition description, including the paper statement about the repeat-visit interval.
doi:10.1037/1082-989X.1.1.30
doi:10.1016/j.jneumeth.2020.108985

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usesPosterior 7–13 Hz alpha frequency had a negative age slope under ±1 exponent changes in fixed spectra from 108 ds003775 participants
We used its unchanged signal extraction code and 84 original spectra through the immediate source package. The code enabled a fresh complete raw replay. The CC0 notice is preserved.
usesRemoving 7–14 Hz lowered repeat agreement of 2–30 Hz posterior EEG slopes with equal bin weights in 60 ds004148 adults with closed eyes
Used 84 saved ds003775 spectra, source metadata, extraction code, and hash records. These files enabled the repeat visit comparison and raw replay.
usesThe 95% error reduction interval included zero for a ds003775 EEG age model in 60 ds005385 adults before cognitive tasks
The inherited source age package used its extraction code and 84 spectra. We preserved those dependencies and used its metadata.
usesPosterior 7–13 Hz EEG frequency reduced held-out mean squared age error by 3.3 percent beyond sex in 108 screened ds003775 v1.2.1 participants with closed eyes
We reused its unchanged signal extraction code, 84 spectrum files, source metadata, raw retrieval recipes, and extraction receipts. We added 69 first-visit extractions. These inputs enabled the full-cohort age prediction test.