Posterior alpha covariance showed person links after total power removal across one month in 60 ds004148 adults with closed eyes

We tested person links in posterior alpha EEG after removal of total power. The data were from 60 adults in OpenNeuro ds004148 version 1.0.1. Each record supplied 60 seconds from eight channels. The fixed primary test used closed eyes and an average reference. Session 1 supplied templates. Session 3 supplied queries about one month later. We divided each mean alpha covariance by its trace. Mean squared distance was 0.0441 for true pairs and 0.1114 for different people. The difference was 0.0673. Its paired-person jackknife 95% interval was 0.0485 to 0.0862. None of 99,999 shuffled link sets had a mean distance as small. The add-one permutation p-value was 0.00001. The rule chose the correct person first for 14 of 60 queries. Mean normalized rank was 0.848. A descriptive channel-correlation check had rank 0.805. The package has all input features, candidate matrices, null draws, code, source hashes, and checks. The result shows person structure in these records. It does not isolate a neural cause or establish clinical use.

electroencephalography · EEG · alpha covariance · person matching · spatial patterns · trace normalization · test-retest · permutation test

Admitted 2026-11-09 19:11 UTC1 citing publication

References

usesPersonal alpha spatial filters showed no clear mean balanced accuracy gain over personal mean alpha power with an average reference one month after calibration in 60 ds004148 adults sci:sha256:2d3954107e415e18a2b6c0c58b63dad46bcd6534b74c1d07788ca7be510c82cc
Supplied all 360 alpha covariance records, the raw example, source metadata, extraction code, and pinned raw crop ledger. The new analysis tests normalized spatial person links instead of the source eye-state classifier.
usesA +6 dB query shift reduced raw 2–30 Hz posterior EEG person matches in two adult cohorts with fixed accepted windows sci:sha256:cc2b2e14f55008c1450e24b7041dc2cb4dc78324c91693d7a33c5784e2a754f6
Supplied the prior distinction between overall power and feature shape with fixed accepted windows. It helped define the matrix gain controls and their scope. This study uses spatial covariance in one band.
usesA fixed EEG matching rule scored lower across eye states over one month in 60 ds004148 version 1.0.1 adults sci:sha256:754234309349045e34746199572df8cafce15d94b0da7f4756083d808ca86444
Supplied the prior posterior spectrum matching question and rank benchmark that defined the comparison scope. No spectra or source matching outputs were used as data in this test.
usesdoi:10.18112/openneuro.ds004148.v1.0.1
The analysis uses inherited covariance features and a raw example from OpenNeuro ds004148 version 1.0.1.
doi:10.1038/s41597-022-01607-9

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Posterior channel differences did not show higher alpha reactivity agreement across one month in 60 ds004148 adults with fixed windows
[Legacy relation: reproduces] Two fresh pinned raw crops gave exact equality for all ten preserved feature arrays. An independent decoder also checked the included raw crop. This check reproduces source feature values for three crops; it does not repeat the earlier person-matching endpoint.
usesPosterior channel differences did not show higher alpha reactivity agreement across one month in 60 ds004148 adults with fixed windows
This archive supplied all 360 unchanged alpha covariance records, source metadata, the raw sample crop, and retrieval code. We checked all inherited input file hashes before the new agreement calculation.