Success selection gave an uncertain mean change and a 5.8 ms change in median jackpot speed contrasts in 66 adults

We tested whether selection of successful reaches changes the jackpot minus standard initiation time contrast in OpenNeuro ds005263 version 1.0.1. The primary sample had 66 healthy adults. Success selection changed the unrestricted mean contrast by +6.49 ms. Its 95% person bootstrap interval was -29.59 to +29.88 ms. The primary change is uncertain. Two planned checks gave smaller speed benefits after selection. The change was +5.79 ms for condition median scores, with interval +2.17 to +9.79 ms. It was +5.43 ms for mean scores limited to 100 through 1,000 ms, with interval +1.87 to +9.02 ms. Long slow reaches made unrestricted means sensitive to a few people. The package includes all 204 source event files, metadata, pinned source hashes, a saved local plan, code, scores, resampling draws, and figures. A separate parser checked all planned person scores and all 20,000 primary bootstrap draws. A full rerun gave identical analysis files. The result concerns score selection in this sample. It does not establish a brain mechanism or a result in Parkinson's disease.

movement initiation · reward · successful reaches · outcome selection · initiation time · behavioral scoring · bootstrap interval