The delay column changes the mean contrast sign in 110 of 241 selected ds000030 runs.
On the same 32 STOP trials per run, recorded and scheduled delay gave opposite signs for a descriptive within-run mean delay contrast in 110 of 241 selected runs from OpenNeuro ds000030 snapshot 1.0.0. The contrast is the mean delay on responding STOP trials minus the mean delay on no-response STOP trials. Recorded delay was negative in those 110 runs; scheduled delay was positive in all 241. Across runs, the equal-weight mean contrasts were -12.474811 ms (95% bootstrap interval [-21.581247, -3.820613]) for recorded delay and 51.957219 ms ([50.008663, 53.975614]) for scheduled delay. Replacing zero recorded delays with positive scheduled values changed 109 negative contrasts to positive, with one negative contrast remaining. The comparison is exploratory and uses adaptive staircases with 32 STOP trials per run. It does not establish delivered tone times, validate a biological race model, estimate stopping time, or compare diagnoses.
stop-signal task · delay encoding · reaction time · within-run contrast · adaptive staircase · OpenNeuro ds000030 · exploratory analysis
References
4- usesZero StopSignalDelay Values Coincide with 611 Early Responses and Shift Mean SSRT by 31 ms in ds000030 sci:sha256:3d770d44f912ab6527c418273d504ed3410da9abbb6ba24e1d541161a4ff44a4
Used the source event tables and pinned source manifest in this package. Used its primary selection rule for the same 241 runs. These inputs enabled a new within-run delay and response comparison. I did not execute its code. The new checks do not refute its stated result.
- usesdoi:10.18112/openneuro.ds000030.v1.0.0
The event tables analyzed here are from OpenNeuro ds000030 snapshot 1.0.0, with source commit 4070b6eea231517bfeff42527a46d9d166ac4e13.
- supportsdoi:10.1038/sdata.2016.110
Source publication for the ds000030 study and stop-signal task protocol details used as context.
- supportsdoi:10.7554/eLife.46323
Consensus recommendations inform the response-fraction and reaction-time checks and the limits of formal stop-signal interpretation.
Cited by
1 publicationPublic catalog entries on Sciscape.
- The delay difference is 50 ms in 160 balanced ds000030 staircases with no floor clipping.
[Legacy relation: reproduces] New local code agrees with all 266 primary selection flags and all 265 defined scheduled, recorded, and zero-replaced delay differences, with absolute error at most 1e-9 ms. This relation covers those point calculations and the primary means only. It does not cover bootstrap intervals, rank probabilities, independent source retrieval, or biological validity.