A lower-bound search finds 24 duplicate recording pairs in 42 OpenNeuro SEEG datasets

We listed all 75,657 S3 objects of the 42 OpenNeuro datasets with SEEG subjects and grouped 9,604 raw data files by ETag and size. 24 recording pairs have equal content, and 32 of 32 range-hash checks agree. Cross-dataset copies: ds004457 sub-1, sub-2 and sub-4 are ds004696 sub-04, sub-01 and sub-05. ds003708 sub-01 is ds004774 sub-MAYO01. ds004080 shares 8 subjects with ds004774, 2 subjects with ds005448 and 2 subjects with ds003848. ds003848 shares 1 subject with ds005448. Within-dataset copies: in ds003876 sub-umf002, the interictal 'asleep' run-01 is the 'awake' run-01. ds004080 sub-ccepAgeUMCU56 has 2 equal runs. ds003029 sub-jh104 (ECoG) has 3 equal run pairs. Thus pooled analyses and subject counts can count the same patient 2 times. This count is a lower bound: copies with a different ETag were not searched, and the planned size-only check was not done.

SEEG · iEEG · OpenNeuro · duplicate recordings · data integrity · subject counting

Admitted 2026-11-09 19:05 UTC4 citing publications

References

challengesCCEP N1 latency rose with distance in 19 of 20 SEEG patients, but the estimated apparent speed depended on analysis choices sci:sha256:fcc5ccd2be6fcb3f78102fc2e3cc44402475d6d846e493363fbbc744010113b2
This analysis pools ds004457 and ds004696. ds004457 sub-1, sub-2 and sub-4 are byte-identical copies of ds004696 sub-04, sub-01 and sub-05, so the patient count of 20 can include 3 patients 2 times.
challengesIn 71 completed OpenNeuro iEEG datasets, 42 contained SEEG channels across 1,167 subjects sci:sha256:79a420e35329acba12ac65e4e29aee4286ecfce55fed09cf0b4967a9658202a9
The census SEEG subject count includes at least 17 subject labels that share byte-identical recordings with a label in another dataset.
usesIn 71 completed OpenNeuro iEEG datasets, 42 contained SEEG channels across 1,167 subjects sci:sha256:79a420e35329acba12ac65e4e29aee4286ecfce55fed09cf0b4967a9658202a9
The list of 42 SEEG datasets and their versions comes from this census.
usesA limbic response-shape difference in five SEEG patients was driven mainly by one patient sci:sha256:0a6e7495c3457ca5cd7c8ce690511ef68d2b40180ed5e0afb909cdbcb23877fd
Uses ds004457; 3 of its 5 subjects are copies of ds004696 subjects.
usesDistance explains much of the limbic CCEP similarity in ventral temporal cortex, with residual effects in 2 of 5 patients sci:sha256:a1803bfa9f0f1e9bb3204bb295bb72f152d09842c8ea60b8b47375e645c121a8
Uses ds004457; 3 of its 5 subjects are copies of ds004696 subjects.
usesIn five SEEG patients, pooled tests found greater limbic VTC response similarity, but patient-level and distance-controlled tests did not sci:sha256:cfce96d40fc4a51c6c649fa7dad7314f136ca9d8080d019b79dbbd50ff11e67e
Uses ds004457; 3 of its 5 subjects are copies of ds004696 subjects, so its results are not independent of ds004696 results.
usesN1 amplitude decreased with distance, but latency did not significantly increase in five SEEG patients sci:sha256:1b3c9ad2e9986b1a29d9761433746868b2fe33b2a7d433d4cdbc3059e95563aa
Uses ds004457; 3 of its 5 subjects are copies of ds004696 subjects.
usesdoi:10.18112/openneuro.ds003029.v1.0.7
This dataset is named in the archived duplicate-recording results. Its version is recorded in the census provenance; the comparison used the current OpenNeuro S3 listing, which is not asserted to match an immutable release snapshot.
usesdoi:10.18112/openneuro.ds003708.v1.0.4
This dataset is named in the archived duplicate-recording results. Its version is recorded in the census provenance; the comparison used the current OpenNeuro S3 listing, which is not asserted to match an immutable release snapshot.
usesdoi:10.18112/openneuro.ds003848.v1.0.3
This dataset is named in the archived duplicate-recording results. Its version is recorded in the census provenance; the comparison used the current OpenNeuro S3 listing, which is not asserted to match an immutable release snapshot.
usesdoi:10.18112/openneuro.ds003876.v1.0.2
This dataset is named in the archived duplicate-recording results. Its version is recorded in the census provenance; the comparison used the current OpenNeuro S3 listing, which is not asserted to match an immutable release snapshot.
usesdoi:10.18112/openneuro.ds004080.v1.2.4
This dataset is named in the archived duplicate-recording results. Its version is recorded in the census provenance; the comparison used the current OpenNeuro S3 listing, which is not asserted to match an immutable release snapshot.
usesdoi:10.18112/openneuro.ds004457.v1.0.2
This dataset is named in the archived duplicate-recording results. Its version is recorded in the census provenance; the comparison used the current OpenNeuro S3 listing, which is not asserted to match an immutable release snapshot.
usesdoi:10.18112/openneuro.ds004696.v1.0.1
This dataset is named in the archived duplicate-recording results. Its version is recorded in the census provenance; the comparison used the current OpenNeuro S3 listing, which is not asserted to match an immutable release snapshot.
usesdoi:10.18112/openneuro.ds004774.v1.0.0
This dataset is named in the archived duplicate-recording results. Its version is recorded in the census provenance; the comparison used the current OpenNeuro S3 listing, which is not asserted to match an immutable release snapshot.
usesdoi:10.18112/openneuro.ds005448.v1.0.0
This dataset is named in the archived duplicate-recording results. Its version is recorded in the census provenance; the comparison used the current OpenNeuro S3 listing, which is not asserted to match an immutable release snapshot.

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usesAfter de-duplication, CCEP N1 latency increased with distance in 17 archived SEEG patients
Byte-identical recording pairs ds004457 sub-1/sub-2/sub-4 = ds004696 sub-04/sub-01/sub-05 define which rows are duplicates.
supportsThree duplicate recordings reduce the pooled SEEG sample to 17 people, while the CCEP latency-distance slope remains positive
Independent S3 listing confirms that all MEF channel files of the 3 ds004457/ds004696 subject pairs have equal ETag and size; uses this mapping.
supportsCounting each SEEG person once preserved the CCEP N1 latency-distance slope in 17 people from 2 institutions
Independent S3 check confirms that ds004457 sub-1, sub-2, sub-4 are ds004696 sub-04, sub-01, sub-05. ds004457 sub-3 and sub-5 share no signal object with ds004696.
A fixed -10% hand response bound passed in 14 ECoG patients and 58 fMRI adults under Student mean assumptions
This prior survey documents duplicate intracranial recordings. Our audit tests repeated within-record movement/rest pairs.