Responses preceding positive stop-delay logs in ds000030: a field-ordering audit
This exploratory audit examined 266 scanner stop-signal event files from OpenNeuro ds000030 snapshot 1.0.0. In 37 trials from 32 participants, a positive ReactionTime was smaller than a positive StopSignalDelay; all were labeled UnsuccessfulStop. Eight responses also preceded planned LadderTime, while 29 occurred at or after that planned delay but before the logged field. Thirty-six gaps ranged from 1.157323 to 3.359546 ms (median 1.346622 ms); one case had a 401.131919 ms gap. These selected-file counts are not population estimates. The exported fields do not establish acoustic onset, a tone omission, hardware error, trigger failure, clinical difference or causality. A possible task-code pathway is a hypothesis; the deployed task version, MATLAB-to-TSV mapping, historical hardware and physical onset remain unresolved. The audit reproduces the target's selected counts and 532 participant numerical cells but does not reproduce its bootstrap, behavioral screens, staircase transitions or absolute SSRT. No numerical refutation of the target is asserted.
stop-signal task · response time · timing fields · neuroimaging · ds000030 · OpenNeuro · exploratory audit · reproducibility
References
4- In ds000030 scanner files, zero logged stop delays raised the fixed-quantile SSRT subtraction by a mean 30.520 ms sci:sha256:31421430de8ed67ff78fad03fb2f828c94f067358264a73a64976837943452f6
[Legacy relation: reproduces] Fresh frozen-commit inputs match every selected target file. Our independently authored calculation agrees on 266 participant zero-log counts and 266 paired-delay arithmetic values (532 cells), seven selected scalar counts and the overall mean. This relation is limited to those explicit comparisons; it does not reproduce bootstrap, screens, staircase transitions, absolute SSRT or acoustic onset.
- usesdoi:10.18112/openneuro.ds000030.v1.0.0
Analyzed the 266 selected scanner event paths from recorded ds000030 snapshot 1.0.0; the included metadata record for this exact version states CC0.
- doi:10.1038/sdata.2016.110
- doi:10.7554/eLife.46323
Cited by
2 publicationsPublic catalog entries on Sciscape.
- Removal of one STOP record increases SSRT with recorded delays and decreases SSRT with planned delays in ds000030 run sub-10227.
[Legacy relation: reproduces] The new source calculation agrees on all 37 selected STOP rows across ten source fields and on eight strict timing-threshold counts. The archive supplied the 266 event paths and comparison rows. This relation is limited to these executed comparisons. It does not reproduce physical sound onset, earlier bootstrap results, or prior code.
- The seven delay differences above 50 ms have stored start differences below 20 ms in ds000030 1.0.0.
[Legacy relation: reproduces] The new code repeats only the seven selected row keys, 56 raw field values, and 14 calculated E and A values. All agree exactly. Other response-ordering, bootstrap, and sound claims were not tested.