A 1,000 ms response limit adds 142 GO omissions in 126 ds000030 control runs.

A test that classified responses above 1,000 ms as no response increased GO omissions from 124 to 266 in 126 control runs from OpenNeuro ds000030 snapshot 1.0.0. It reduced STOP responses from 2,079 to 2,067 and reduced the number of participants who passed the three-condition screen from 122 to 118. Four participants lost screen status because of the GO omission condition; none gained status. The integration expression changed for nine participants. Its mean change was -1.7372693968271746 ms across all 126 participants and -0.656259508200041 ms in the fixed baseline screen sample of 122. Seven values changed in that sample. These are exact calculations for the selected sample using fixed recorded delay histories, not a validated correction or a simulation of a task with a different staircase history. Task and event conversion versions remain unknown; acquisition or conversion timing errors are possible. The analysis does not establish valid participant SSRT values or race-model validity, does not test a neural effect, and does not estimate population uncertainty. Each run has 32 STOP trials, below the cited recommendation of 50 for standard group comparisons.

stop-signal task · reaction time · response limit · GO omission · ds000030 · reproducibility · sensitivity analysis