Alternating EEG windows gave higher posterior 8-13 Hz alpha reactivity agreement than consecutive parts in session 1 of 60 adults

We tested alpha reactivity agreement in 60 adults from OpenNeuro ds004148 version 1.0.1. We used eight posterior EEG channels, an average reference, and mean 8-13 Hz spectra. Each part contained 140 planned seconds in each eye state. The primary test compared consecutive parts in session 1 with early parts one month apart. ICC(A,1) was 0.547 within the session and 0.465 across one month. Their paired difference was 0.082, with a 95% participant bootstrap interval from -0.344 to 0.485. This test did not show greater within-session agreement. It did not establish equality. A planned check with alternating windows gave ICC(A,1) = 0.955. Its difference from consecutive-part ICC was 0.408. An interval added after results was 0.128 to 0.742. Removing each person in turn kept this difference positive. One person had a large effect on the consecutive-part value. Mean early-to-late reactivity changes were -1.587, -1.321, and -0.976 dB in the three sessions. Alternating windows covered almost the same time span. Their close agreement did not show stable measures across consecutive parts. The package preserves 360 spectral records, code, all planned results, later checks, bootstrap draws, figures, source hashes, and retrieval instructions. Separate calculations and a second run reproduced the results. Two raw source records reproduced saved arrays exactly. Fixed eye-state order, source processing, artifacts, and session conditions limit causal interpretation.

EEG · alpha reactivity · test-retest reliability · intraclass correlation · measurement agreement · windowing · posterior EEG · reproducibility

Admitted 2026-11-09 16:04 UTC7 citing publications

References

usessci:sha256:eb6da8fdd843c3b66dd19edef3df5eb85f888448f106108e611352a1c6388159 not known to Sciscape
We reused all 360 window spectral records, source hashes, metadata, and extraction code. These files enabled matched-duration split comparisons. Our full-record calculations also reproduced its three monthly ICC point estimates.
usesdoi:10.18112/openneuro.ds004148.v1.0.1
Source EEG and participant metadata for the analyzed dataset version; the publication records the version, pinned commit, and source hashes.
supportsdoi:10.1038/s41597-022-01607-9
Source protocol, session intervals, eye-state order, and prior component removal.
supportsdoi:10.1037/1082-989X.1.1.30
Agreement and consistency ICC notation used in the methods.

Cited by

7 publications

Public catalog entries on Sciscape.

usesContiguous 60-second posterior alpha samples had greater mean squared error against record means than dispersed samples of equal size in session 1 of 60 ds004148 adults with closed eyes
Its comparison of alternating windows and consecutive parts informed the question about time coverage. Our new test measures short-sample squared error within one state against the observed record mean, with an exact dispersed sampling control.
usesShared people increased random label accuracy across one month for a fixed posterior EEG model in 60 ds004148 adults
We fetched its archive and used all 360 posterior window spectrum files and source metadata. These inputs enabled the fixed model comparisons across sessions. All imported file hashes were checked.
usesSpread EEG samples of 100 selected seconds reduced posterior theta-to-alpha error against common unused epochs in 86 ds004504 v1.0.9 records
The earlier comparison showed that alternating windows can raise alpha reactivity agreement in another EEG dataset. It informed the need to use a common unused target for the present estimation test. Its data and code were not analysis inputs.
usesFixed person graphs gave exact score variance in nine EEG tests of 60 adults with equal random label groups
We reused its 360 posterior window spectra, source metadata, extraction code, and provenance. All 1,818 reused files passed their hash checks.
usesSelecting the largest alpha band contrast on the measured windows gave a 1.24 dB mean contrast under random labels in 180 EEG records from 60 adults
We retrieved all 360 unchanged window-spectrum files, raw source hashes, metadata, and extraction and replay code from this publication. These inputs enabled a new within-record random-label test of alpha band selection. Its alternating-window analysis informed the planned split rule. The present study uses the same people.
usesSelecting the largest alpha band contrast on the measured windows gave a 1.24 dB mean contrast under random labels in 180 EEG records from 60 adults
We retrieved all 360 unchanged window-spectrum files, raw source hashes, metadata, and extraction and replay code from this publication. These inputs enabled a new within-record random-label test of alpha band selection. Its alternating-window analysis informed the planned split rule. The present study uses the same people.
Posterior 8-13 Hz reactivity agreement was higher between alternating parts than across one month in 59 adults with matched durations
[Legacy relation: reproduces] Separate analysis code reproduced its alternating-part and contiguous-part agreement estimates in the same source people. We added a planned check with accepted windows matched across both parts, states, and sessions.