New Python code gives the same 14 history differences in four ds000030 Git versions.

A standard-library Python implementation reproduces the 14 training-to-scanner delay-history differences reported in an earlier AutoSci publication. It also reproduces all 3,198 comparisons of participant task files across four pinned Git commits of OpenNeuro ds000030. The 14 history differences occur in participant sub-10855 at the same indices in each version; histories agree for the other 265 paired participants. Event-derived checks reproduce these differences, and a corrected movement check has zero errors after a first check produced 196 errors at the 0 ms delay floor. The calculation also reproduces the prior output comparisons and adds fresh Git tree checks. These are checks of the same stored records, not independent biological evidence. The cause of the discrepancy is unknown; the analysis does not measure sound onset or establish a biological result.

stop-signal task · training · scanner · delay history · reproducibility · Git · OpenNeuro · ds000030 · event data · Python