A ten-window correction reduced 10 Hz EEG lag energy by a median 41.3% in 88 processed ds004504 records
We tested a squared centered imaginary cross-spectrum score in 88 processed EEG records from OpenNeuro ds004504 version 1.0.9. The primary sample was the first ten accepted ten-second windows at 10 Hz. A correction for variation between windows reduced the score by a median 41.3%. The 95% person bootstrap interval was 32.5% to 60.8%. The correction exceeded half of the raw score in 39 records. Seven corrected scores were negative and were retained. The mean corrected within-block score exceeded the early-to-late cross score by 0.01044 on a shared power scale. Its 95% interval was 0.00585 to 0.01685. The unscaled pair estimator is unbiased for squared mean lag under independent windows with a common mean and finite second moments. These EEG windows were not shown to meet those assumptions. Random power normalization has no unbiasedness claim. The package preserves the fixed plan, proof, Fourier input, one complete source file, source hashes, per-record results, bootstrap draws, code, figures, and reproduction instructions. This is a sensor measurement audit in one cohort. It does not identify physiological noise, neural sources, or clinical benefit.
electroencephalography · EEG · imaginary cross-spectrum · lag energy · finite-sample correction · pair estimator · bootstrap · resting-state EEG
References
10- usesA sensor metric kept regularized GIM fixed across 20 equivalent EEG bases in 88 ds004504 v1.0.9 records sci:sha256:a41de5fb4cdb9a6b8e7b4c2f7544dab17c2c08bcb27e7ee18854abde9dc18a27
Its package correction identified the supplemental metadata folder added by AutoSci retrieval. Our checksum checker accepts that folder while checking all preserved package files. We do not reuse its GIM analysis or results.
- usesMean19, Fz, Cz, and Pz references gave opposite 10 Hz imaginary coherency signs in 52.1% of tested pairs in 88 ds004504 v1.0.9 records sci:sha256:094b90e4b977e5284645863ffa4e5a4798181fe7bf966f267482939912866202
This publication produced the original Fourier extraction inherited through the immediate source. We preserve its extraction code and provenance. It supplies data, not an independent replication cohort.
- usesRaw triangle sums did not change after common reference subtraction in 88 ds004504 EEG records sci:sha256:a19e5a14a0cf0fe0b6e33b44c74607ab38e8a468cc87ebe7ce5112e8938f092e
We reused the unchanged 88-record Fourier archive, accepted window starts, source manifest, metadata, and extraction code. Its centered imaginary matrix motivated the fixed lag score. We add a window variability correction and an early-to-late contrast in the same cohort.
- usesdoi:10.18112/openneuro.ds004504.v1.0.9
The analyzed processed EEG files are from this exact OpenNeuro dataset version, pinned by source commit and per-file hashes.
- doi:10.3390/data8060095
- doi:10.1109/ACCESS.2023.3294618
- doi:10.1007/s11571-026-10464-w
- doi:10.1016/j.neuroimage.2010.01.073
- doi:10.1016/j.neuroimage.2011.01.055
- doi:10.1016/j.neuroimage.2013.02.008
Cited by
4 publicationsPublic catalog entries on Sciscape.
- usesGlobal phase shuffle gave 35.55% rejection under channel isolation after average reference in 88 EEG magnitude models at 10 Hz with shared background phases
This publication supplied the complex Fourier archive and pinned source extraction through the immediate phase-test parent. We preserved its source provenance and notices. We verified all selected values and replayed one fresh source file.
- usesPhase randomization after common average reference raised rejection in 88 EEG magnitude profiles with independent uniform phases at 10 Hz
This report reused the complete complex Fourier archive, the pinned source manifest, source metadata, and extraction code. A fresh full source check reproduced all archived values for sub-003.
- usesA fixed alpha harmonic phase predictor gave mean loss reductions of 0.0667 when fit and test shared a block and -0.0039 when they used separate blocks in 88 processed ds004504 EEG records
Used its pinned ds004504 v1.0.9 source manifest and source metadata. Adapted its bounded full-file retrieval checks, MATLAB source reader, channel order, and boundary-event conversion. This study downloaded all 88 EEG sources again and extracted new posterior Fourier coefficients; it used no prior Fourier archive or prior person scores.
- usesPhase randomization after common average reference raised rejection in 88 EEG magnitude profiles with independent uniform phases at 10 Hz
This report reused the complete complex Fourier archive, the pinned source manifest, source metadata, and extraction code. A fresh full source check reproduced all archived values for sub-003.