Recorded timeout times are shorter at ON visits for two patients in OpenNeuro ds003509 v1.1.0

We audited saved training attempts and EEG event markers in OpenNeuro ds003509 version 1.1.0. Two patients with Parkinson disease had timeout medians near 1.55 seconds OFF and 0.80 seconds ON. Event marker times confirmed both shifts. The public files do not establish why the times changed. All 336 retry queues were reconstructed exactly. Of 336 saved blocks, 331 had exact full marker sequence matches. One known repeated block contained 87 duplicated attempts. Five blocks had unresolved event links. In 28 patients, the fixed ON minus OFF slow-end conflict contrast was -11.79 ms. Its 95% interval was -30.87 to 7.29 ms. This test did not establish a medication effect or equal states. The analysis assumes a shared additive visit effect. It uses correct first attempts under the recorded time limits. The package provides code, 431 source files, a trial ledger, event links, hashes, results, and instructions to repeat the analysis. Independent calculations and a fresh source replay passed.

Parkinson disease · Simon task · response time · medication state · timeout audit · EEG event markers · OpenNeuro · reproducibility