Four ds000030 Git versions have the same 14 training and scanner delay history differences.

We compared stop-signal training and scanner delay histories in four specified Git versions of OpenNeuro ds000030: tags 00001, 00002, 00016, and 1.0.0. Across 1,066 participant task files, all paths, blob IDs, modes, and sizes agree among the versions; all 3,198 baseline comparisons agree. The same 14 training/scanner history differences occur in each version for participant sub-10855. Across 266 paired participants, histories agree in 265 pairs and 530 of 532 ladders; 14 of 9,044 compared values differ. No available training history pair matches the sub-10855 scanner prefix. All 17,056 STOP-trial delay values and updates agree with the task histories, and a second reader finds the same 14 differences. These results show that the recorded discrepancy is stable across the four tested versions and is not supplied by the additional training-only record. They do not establish its cause, validate physical cue timing, or show that the full datasets are identical. The four versions contain repeated records, not independent samples, and the counts describe only the specified files. The event tables and histories may share a conversion error; acquisition logs and the converter version were unavailable.

stop-signal task · training history · scanner history · dataset versioning · data provenance · OpenNeuro · record comparison · response inhibition