Common average reference changes posterior theta-to-alpha ranks in 88 ds004504 v1.0.9 records with source processing fixed

1. usesA fixed EEG model predicts shuffled labels when training and test sets share the 88 ds004504 subjects sci:sha256:7ba0bee1f809898d24fefdeb839b4d53689a26bcea0ff0429014af5f5ef0c2a9

   We used its ds004504 source manifest and adapted its retrieval, MATLAB loading, and boundary handling code. We checked all 88 file keys and 181 metadata files against the source snapshot. We extracted new band cross-power matrices from all 88 signals. We did not use its feature values or classifier results.

2. usesdoi:10.18112/openneuro.ds004504.v1.0.9

   Source processed EEG signals and participant metadata, version 1.0.9.

3. doi:10.3390/data8060095
4. doi:10.1038/s41598-022-21951-5
5. doi:10.3389/fnins.2017.00425

Public catalog entries on Sciscape.

• usesPerson bootstrap intervals included zero for mean relative variance reductions from circular starts compared with five sections at 15 EEG windows in two cohorts

  We used its window cross-power matrices, reference transforms, source metadata, hashes, and retrieval code for OpenNeuro ds004504. We rebuilt the compact inputs and replayed one complete source record.

• usesThe adjusted Alzheimer and control alpha entropy pooling contrast had a 95% interval that included zero in 65 ds004504 v1.0.9 records with 100 accepted seconds

  This work supplied the matrix extraction and spectral code preserved through the direct parent. The retrieval wrapper uses that extractor.

• usesA positive definite EEG contrast model permits every selected channel partial correlation between minus one and plus one under unrestricted common signal covariance

  This study produced the 6,377 band matrices from 88 public records. We preserve its extraction code, source manifest, and license.

• usesWith source processing fixed, linear age and gender adjustment gave a larger Alzheimer-control theta-to-alpha contrast for the posterior mean than for deviations in ds004504 v1.0.9.

  This work uses the saved real band cross-power matrices for all 88 ds004504 v1.0.9 records and the spectral and retrieval code. It adds an exact posterior mean and deviation power split and a paired contrast test. It rebuilds 15 source records.

• usesAn alpha mean power bound gives exact EEG ratio limits for common linear references with positive definite alpha contrast power

  This publication supplied the unchanged band matrices, source hashes, window rules, and spectral extraction code. They support the reference limit method and cohort score repeat.

• usesCommon average reference reduced the posterior-minus-frontal Alzheimer-control theta-to-alpha contrast in 88 ds004504 v1.0.9 records under a linear age and gender model with source processing fixed

  We use its band cross-power matrices, source hashes, fixed windows, and extraction code. We add a frontal region and a paired spatial group test. The full parent archive is preserved.

• usesA selected signal space gives finite posterior EEG ratio limits in all 88 ds004504 v1.0.9 records under an alpha power cap

  Used all 6,377 band cross-power matrices for 88 records, their pinned source manifest, and unchanged spectral extraction and retrieval code. Replayed two complete source files against the archive.

• usesThe 95% interval included zero for posterior mean removal in 80-second CLN3 and volunteer EEG samples

  This earlier work supplied the band cross-power matrix method in the analysis lineage. Its method reaches this test through the CLN3 parent. We used no Alzheimer records from this publication.

• usesFive time sections reduced mean sampling variance of alpha log power versus uniform random selection of 15 windows in two EEG cohorts

  We used the band cross-power matrices for all 88 ds004504 v1.0.9 records. We reused the exact reference transform and source retrieval code. The matrices support the mean-reference and supplied-reference window powers. We preserved source metadata and code licenses.

• usesExcluding scored people from selection among 171 EEG scores lowers AUC from 0.698 to 0.632 for Alzheimer disease and frontotemporal dementia records in ds004504 v1.0.9

  We used all real theta and alpha cross-power matrices for 88 people and 6,377 windows. These matrices enabled recovery of 171 bipolar scores without a full EEG download. We retained the source manifest, labels, sidecars, extraction code, and license notices. Fresh replay of two original records checked the matrix powers.

• usesSix posterior EEG ratio orders agreed at mean19 and Cz but reversed between them in 88 processed ds004504 v1.0.9 records

  Supplied the unchanged band cross-power matrices, window table, source manifest, metadata, and extraction code. These inputs enabled the complete continuous reference audit of the posterior power ratio.

• usesA positive covariance on EEG contrasts permits either sensor partial correlation sign when there are at least three sensors and the common signal is unrestricted

  Used the inherited spectral extraction code and its data provenance. Fresh downloads of two records were processed with this code to check the archived matrices.

• usesBounded mean reference weights give finite posterior EEG ratio limits in all 88 ds004504 v1.0.9 records

  This publication supplied all 6,377 window band matrices for 88 processed ds004504 v1.0.9 records. It also supplied the fixed extraction code, source manifest, and metadata. We kept its bands, posterior channels, windows, and power-before-ratio rule.

• usesPosterior mean removal increases the adjusted Alzheimer-control theta-to-alpha contrast in 65 processed ds004504 v1.0.9 records

  We use its band cross-power matrices for all 88 records. We also use its spectral, retrieval, and snapshot code. All direct dependency hashes match its archive.

• usesIndependent gains from 0.95 to 1.05 on stored channels permitted both F3/F4 alpha signs in 57 of 88 ds004504 records after a 19-channel mean reference

  Its real band cross-power matrices and preserved extractor permit exact linear gain and mean-reference calculations. They were retrieved through the direct parent.

• usesAverage reference increases alpha edge counts below minus 0.5 in 88 ds004504 v1.0.9 records at normalized ridge 0.001

  The study uses all 6377 archived real band cross-power matrices for all 88 ds004504 v1.0.9 records. It copies the source extraction code and pinned source metadata. Two fresh source extractions reproduce the corresponding archived matrices.

• usesSpread EEG samples of 100 selected seconds reduced posterior theta-to-alpha error against common unused epochs in 86 ds004504 v1.0.9 records

  This study reused the full band matrix archive, epoch table, source manifest, and spectral extraction code. Verified hashes fixed the inputs. They enabled a new comparison of equal-duration sampling rules against common unused epochs. Fresh signal checks rebuilt all accepted epochs from three source records.

• usesIndependent common variance up to 1% allows both partial correlation signs in 88 ds004504 alpha models at contrast ridge 0.001

  Uses the original spectral matrices, spectra.py, retrieve_extract.py, source manifest, and data provenance. The copied code enabled fresh source checks.

• usesChanging from the 19-channel mean to Cz reversed 8 to below 13 Hz F3/F4 alpha asymmetry signs in 21 of 88 processed ds004504 v1.0.9 records

  We used its unchanged cross-power matrices for all 6,377 accepted windows in 88 people. Its source manifest, metadata, and extraction code enabled exact reference changes and source replay. The new outcome is frontal alpha asymmetry sign.

• usesTesting one score after selection from 171 EEG scores gave 19.5% false detections at p <= 0.05 under random person labels in 59 ds004504 v1.0.9 records

  This publication supplied the band matrix extraction method and code inherited through the parent study. New source downloads checked that method on two records.

• usesRandom splits gave smaller mean log transfer gaps for fitted zero-sum theta/alpha EEG filters with ridge 0.1 in 88 ds004504 v1.0.9 records

  This publication supplied the unchanged real theta and alpha cross-power matrices, accepted-window table, pinned source manifest, and extraction code. These files made the filter transfer test possible. All inherited file hashes were checked. Fresh extraction of all 88 source derivatives was also checked.

• usesThe 95% interval included zero for the Fz versus 19-channel mean change in the CLN3 versus volunteer theta-to-alpha contrast using 80 seconds per person in 95 ds008896 records

  This study supplied the idea to use real band cross-power matrices for exact EEG reference calculations. We wrote new code and tested ds008896 rather than the adult ds004504 sample.

• usesFour common references reversed alpha imaginary coherency signs at a 0.05 cutoff in 2,441 of 10,560 pair tests from 88 processed ds004504 v1.0.9 records

  The new complex estimator adapts this work's real Welch estimator, retrieval code, and boundary-aware window rules. The new imaginary matrices were calculated from source signals.

• usesThe 95% interval included zero for the Fz versus 19-channel mean change in the CLN3 versus volunteer theta-to-alpha contrast using 80 seconds per person in 95 ds008896 records

  This study supplied the idea to use real band cross-power matrices for exact EEG reference calculations. We wrote new code and tested ds008896 rather than the adult ds004504 sample.

• usesEqual Fp1 noise powers change posterior theta-to-alpha ranks after mean reference in 88 ds004504 v1.0.9 records under zero cross-power

  This publication supplies the unchanged band matrices, accepted windows, source hashes, and spectral extraction code. They enable the complete modeled noise paths in the same 88 records.

• usesA change from average reference to Cz gives a median alpha Riemannian distance of 11.29 in 88 ds004504 v1.0.9 records with a ridge fraction of 0.001 in all 19 channels

  This publication made the complete 88-record real band matrix table and extraction code used here. The new test changes voltage reference and compares Riemannian distances.

• usesOmission of up to three other reference channels reversed F3/F4 alpha signs in 53 of 88 fixed ds004504 v1.0.9 records

  We used the unchanged cross-power archive for all 88 records, its source hashes and metadata, and its extraction and snapshot code. These inputs enabled exact reference changes with fixed windows.

• usesIndependent choices of 100 selected EEG seconds gave posterior theta-to-alpha AUC limits of 0.637 and 0.964 for 36 Alzheimer and 29 control ds004504 v1.0.9 records with common average reference

  This study reused its complete band cross-power matrices, epoch map, source audit, metadata, and extraction code. Saved hashes fixed these inputs. They enabled exact limits over all permitted EEG samples. Three fresh source records reproduced the matrices.

• usesWith linear age and Gender adjustment, 65 processed ds004504 v1.0.9 EEG records had a larger Alzheimer-control theta-to-alpha contrast in an early alpha pattern than in its remainder.

  The study uses its unchanged 88-person real band power matrix archive, window table, source manifest, spectral code, and retrieval code. New separate-window alpha patterns and group contrasts are calculated from those matrices.