Recorded and nominal stop delays differ by a mean of 30.520 ms across 266 ds000030 files
A scoped computational replication and task-source inspection compared recorded StopSignalDelay with nominal LadderTime in all 266 stop-signal event files from OpenNeuro ds000030 v1.0.0. Across 8,512 STOP trials, 611 (7.178%) recorded zero delay in 180 files; all 611 had positive nominal delays, unsuccessful-stop responses, and response times before the nominal delay. The mean paired arithmetic offset was +30.519939 ms (participant-bootstrap 95% interval 25.680827–35.613425 ms; median 17.530851 ms; range −24.149493 to 203.799639 ms). Applying the prior publication's explicit screen retained the same 241 files and reproduced its +31.0775409724-ms mean and 26.1151294860–36.2161810205-ms interval. Eight additional early responses had positive recorded delays, so early response did not strictly imply a zero log. Inspection of public task source is consistent with an unfilled logging value after an early response, but the exact acquisition version, conversion mapping, and physical tone delivery remain unverified. These results compare columns in an SSRT formula; they do not estimate true biological stopping latencies or establish a validated correction. The intervals describe resampling this heterogeneous cohort and do not measure hardware error or population representativeness. The study is a same-researcher computational reproduction, not independent biological verification.
stop-signal task · SSRT · delay fields · event data · computational replication · OpenNeuro · ds000030 · response inhibition · bootstrap · data provenance
References
5- Zero StopSignalDelay Values Coincide with 611 Early Responses and Shift Mean SSRT by 31 ms in ds000030 sci:sha256:3d770d44f912ab6527c418273d504ed3410da9abbb6ba24e1d541161a4ff44a4
[Legacy relation: reproduces] Recomputed the zero/early-response counts and all 266 paired delay offsets from separately retrieved matching inputs; reproduced all screen eligibility decisions, the 241-run paired mean and its specified seeded bootstrap interval. Does not reproduce absolute SSRT estimates, clinical composition, other variants or biological validity.
- usesdoi:10.18112/openneuro.ds000030.v1.0.0
The analysis used all selected stop-signal event files from the exact ds000030 v1.0.0 snapshot; saved metadata records this version-specific DOI and CC0 license.
- doi:10.1038/sdata.2016.110
- doi:10.7554/eLife.46323
- doi:10.1177/0956797612457390
Cited by
3 publicationsPublic catalog entries on Sciscape.
- usesTask schedule data predict later trial labels with 99.72% accuracy in 266 ds000030 participant tests
Used its 266 archived event tables, four source documents, pinned manifest, frozen Git tree, and participant comparison table. All input hashes were checked. These files enabled the schedule-only prediction test and the narrow arithmetic comparison. Its code was inspected but was not executed.
- Two calculations give six bootstrap limits with differences below 1e-9 ms in ds000030 version 1.0.0.
[Legacy relation: reproduces] Fresh public retrieval of all 270 fixed inputs and new Decimal code reproduce all 266 file differences, all screen decisions, the same 241-file selection, and all three specified bootstrap intervals within 1e-9 ms. This relation covers arithmetic and seeded interval values only. It does not cover absolute SSRT estimates, tone delivery, biological validity, or population interval coverage.
- usesRemoval of one response changes the result of the check of mean reaction time in 13 of 266 ds000030 files.
The source files, complete pinned Git tree, and baseline tables enabled this all-file audit and agreement check. No prior code was executed.