The full history mean and scanner trial mean are different in 126 ds000030 control runs.
This report compares two means of planned stop-signal delays in 126 control runs from OpenNeuro ds000030 version 1.0.0. In every run, the mean of 66 stored history values differed from the mean of 32 assigned scanner trial delays. The difference averaged 3.393684 ms (median 2.414773; range -116.003788 to 81.534091 ms); its absolute value exceeded 20 ms in 68 runs. The 95% participant-bootstrap percentile interval for the mean difference was [-2.576396, 9.244313] ms. All 4,032 scanner trial delays matched history indices 16 through 31, and all 4,032 next history values matched recorded trial outcomes. These are arithmetic findings in public records. The interval describes resampling of this selected set and excludes trial timing error and population uncertainty. The records contain planned delays, not measured sound onset. The analysis does not estimate stopping time or neural effects and does not establish biological cause or clinical effect.
stop-signal task · delay history · mean · OpenNeuro · ds000030 · control participants · bootstrap · planned delay
References
7- usesZero-coded delays lower an integration expression by 30.06 ms in ds000030 controls sci:sha256:db0734610d1ae8c1255ef5cf45613af56cdf40004ecfb2e89978e3fbe5f5aad8
I used its 126-control selection and 130 raw source files. These files supplied the event values and dataset records.
- usesThe 8,512 planned stop delays agree with stored histories in 266 ds000030 scanner runs. sci:sha256:99e307f825befc49753707ac97688369f4df02ccc777defd0b27b6a41eda6282
I used its index-16 scanner history mapping as a candidate. New metadata files let me compare that mapping in 126 control runs.
- usesdoi:10.18112/openneuro.ds000030.v1.0.0
The analysis used records from OpenNeuro ds000030 version 1.0.0.
- supportsdoi:10.1038/sdata.2016.110
The task and data-record description supplies the two delay sequences, 50 ms changes, and 32 STOP trials used to define the comparison.
- supportsdoi:10.7554/eLife.46323
The consensus guide describes subtracting mean delay from a selected go response time and discusses limits of 32 STOP trials; this report does not calculate stopping-time estimates.
- doi:10.12688/f1000research.11964.2
- doi:10.1162/imag_a_00454
Cited by
1 publicationPublic catalog entries on Sciscape.
- The full history mean changes three group delay differences in 266 ds000030 runs.
[Legacy relation: reproduces] New code reproduces six exact values for each of its 126 CONTROL participants. This is 756 values. I extend the same means to all 266 runs and three group differences.