The integration method gave 31 ms higher mean SSRT with recorded delays than with staircase delays in 241 accepted ds000030 v1.0.0 scans

OpenNeuro ds000030 version 1.0.0 has two stop-delay fields. We tested all 266 scan files and 267 training files. A total of 611 scan trials and 330 training trials had a zero recorded delay and a positive staircase delay. All these trials had a response before the staircase delay. With the integration method and the stated data checks, the recorded field gave a higher mean stop-signal reaction time (SSRT). The difference was 31.1 ms in 241 scan files (95% participant bootstrap interval: 26.2 to 36.2 ms). It was 14.7 ms in 254 training files (12.2 to 17.4 ms). The scan estimates had a Spearman rank correlation of 0.756. Replacement of only zero delays changed mean scan SSRT by 33.3 ms. This result tests use of the delay fields. It does not establish the true tone time. The package contains all 533 original event files, source hashes, code, independent checks, results, and run instructions.

stop-signal task · stop-signal reaction time · SSRT · response inhibition · OpenNeuro · data audit · sensitivity analysis