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q-bio.NC · Neurons and Cognitionq-bio.QM · Quantitative Methodsstat.ME · Methodology

All single STOP record removals keep opposite delay contrast signs in 87 of 118 tested ds000030 runs.

This fixed-sample sensitivity analysis tested whether opposite signs in recorded-delay and planned-delay STOP contrasts remain after removing STOP records from 266 OpenNeuro ds000030 runs. The contrast is the mean delay on STOP responses minus the mean delay on STOP nonresponses; recorded delay is 1000 × StopSignalDelay, and planned delay is LadderTime. One run had no nonresponses, leaving 265 defined baseline runs. Of 118 runs with opposite baseline signs, every single removal retained opposite signs in 87; at least one removal lost them in 31. Of 3,776 single removals across those 118 runs, 163 lost opposite signs: the recorded-delay contrast became positive in 158 and the planned-delay contrast became negative in five, all in sub-70022. Every pair removal retained opposite signs in 57 of the 118 runs. Baseline values reproduced the prior printed values within 5E-13 ms (permitted difference 1E-10 ms). These are exact counts for fixed tables, not population estimates or repeated-run reliability. Removals do not replay the adaptive task, and the table fields do not establish tone delivery time.

stop-signal task · record removal · sensitivity analysis · delay contrast · response inhibition · OpenNeuro · ds000030 · fixed-sample analysis

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References

6
  1. The delay field changes the contrast sign in 118 of 265 tested ds000030 runs sci:sha256:20a3e1fdab0d29a10ebb0291a01763032373858a73fff56113bbe7d1ec9e8b24

    [Legacy relation: reproduces] New code from the raw tables reproduces all baseline contrast values and signs, response counts, screen flags, and timing-exception counts. The new analysis then tests each single and pair STOP record removal. The reproduction excludes the prior bootstrap and ordering results.

  2. usesRemoval of one STOP record changes H SSRT by at least 10 ms in 37 of 122 selected ds000030 controls with the rank rule. sci:sha256:f5f62b50e884281b1d42b16ab54e9665e748cd6fba28157d895966c868990043

    The read description supplied the actual STOP record removal procedure. It keeps GO records and later adaptive delays fixed. We apply that procedure to delay contrast signs in the 265 runs with defined contrasts. The source sample contains 266 runs.

  3. usesdoi:10.18112/openneuro.ds000030.v1.0.0

    The analysis uses the recorded ds000030 behavioral event tables. The source is pinned by Git commit 4070b6eea231517bfeff42527a46d9d166ac4e13; the source description states this dataset DOI and CC0 license. The commit is the version pin, and equivalence to a named release is not assumed.

  4. supportsdoi:10.1038/sdata.2016.110

    The data descriptor was read for the scanner stop-signal task, its 96 GO and 32 STOP trials, and its adaptive 50 ms delay schedules.

  5. supportsdoi:10.7554/eLife.46323

    The task guide was read for response rules and limits on stop-signal reaction-time estimates. Its trial-count advice is not treated as a threshold for the sign statistic in this analysis.

  6. doi:10.3389/fpsyg.2012.00037

    This reliability study was read as background on repeated measurements and stop-signal estimates. It motivates distinguishing record sensitivity from repeated-run reliability.

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