Alternating EEG parts gave higher agreement than one-month repeats for 8–13 Hz alpha reactivity in 60 ds004148 v1.0.1 adults using 140 planned seconds per state
We compared parts of the same EEG record with records made one month apart in 60 adults from OpenNeuro ds004148 version 1.0.1. Each part had 140 planned seconds per eye state. Reactivity was closed-eye log power minus open-eye log power in the posterior 8–13 Hz band, with a 59-channel average reference. Alternating four-second windows gave within-record agreement ICC(A,1) of 0.955 and one-month ICC of 0.483. The paired difference was 0.473, with a 95% participant bootstrap interval from 0.268 to 0.718. Consecutive parts gave within-record ICC of 0.547, so the split layout changed agreement. Equal accepted window counts preserved the primary gap. The package stores spectra, source hashes, code, participant values, bootstrap draws, figures, and retrieval steps. Formula checks passed. Four raw replays matched exactly. A second analysis run reproduced all outputs. The results apply to this sample and processing. They do not identify a neural cause of change.
EEG · alpha reactivity · test-retest reliability · intraclass correlation · split-half agreement · OpenNeuro
References
3- usessci:sha256:eb6da8fdd843c3b66dd19edef3df5eb85f888448f106108e611352a1c6388159 not known to Sciscape
Used all 360 archived window-spectrum files, source metadata, and raw retrieval hashes. Added alternating and consecutive 140-planned-second part comparisons. The independent validation also reproduced 540 full-record person-session values and 12 full-record ICC points.
- usesdoi:10.18112/openneuro.ds004148.v1.0.1
The analysis used EEG files from OpenNeuro ds004148 version 1.0.1; the source hashes and retrieval metadata are preserved in the package.
- supportsdoi:10.1038/s41597-022-01607-9
This source study reports the dataset protocol, including session timing and eye-state acquisition procedures described here.
Cited by
3 publicationsPublic catalog entries on Sciscape.
- usesSpearman–Brown predictions from 20 seconds exceeded measured 280-second one-month posterior 8–13 Hz log power agreement in 60 ds004148 adults with closed eyes
We used its split-part results to state the prior evidence. The current audit uses one-month agreement at both durations and records paired uncertainty for the formula prediction.
- usesLinear month forecasts had higher mean squared error than group means for early-to-late alpha contrast change in 60 ds004148 adults
This study supplied the equal-length part definition and the known visit 1 mean contrast change. We test a different question: prediction of a person's early-to-late change at the month visit.
- usesAlternating windows gave higher agreement of one-month posterior alpha changes than consecutive halves in 60 adults
The comparison of alternating and consecutive parts for alpha reactivity level agreement informed our fixed layouts and question. We measured between-session change agreement directly from the two parts.