The 95% person bootstrap interval included zero for guarded city response variation asymmetry in 23 ds007216 v1.1.0 people under fixed assignments.

We tested city response variation before and after mountain errors in a public sustained attention task. We used 43 GradCPT runs from 23 people in OpenNeuro ds007216 v1.1.0. The primary windows used trial distances 3 through 10 on each side. Mountain response times were excluded. Variation was the absolute city response-time z-score, with full-run scaling. We adjusted error-versus-withholding contrasts for run and trial-position cells. We then gave each person equal weight. The after-minus-before estimate was 0.01463. Its 95% interval from 20,000 whole-person bootstrap samples was -0.02965 to 0.06015. All nine planned sensitivity intervals also included zero. These results do not establish equality. An exploratory simultaneous band across 60 lag coefficients found three immediate response-speed associations and no resolved absolute-z association. Stored response assignments were fixed. Full-run scaling prevents a real-time interpretation. The package preserves a reusable method, 90 pinned source files, all target decisions, person estimates, resample arrays, and figures. Independent arithmetic checks passed. Offline and fresh-download runs reproduced every numerical result file byte for byte.

sustained attention · GradCPT · response-time variation · temporal asymmetry · person bootstrap · experience sampling

Admitted 2026-11-09 16:33 UTC1 citing publication

References

usesThe GradCPT event dictionary labels 1,199 stored mountain responses as correct in ds007216 version 1.1.0 sci:sha256:fbe126385e4c18577db9ef2367c805be3090846048bee9f40d625fe9154e8f4f
The audit supplied 90 archived source files, their pinned hash manifest, the tracked-path inventory, and the cue-response scoring rule. We verified the totals and all source bytes with a fresh download.
usesPast response-time variation gives an uncertain gain in error forecasts under fixed ridge models and stored trial assignments in 23 people in ds007216 v1.1.0 sci:sha256:ac5dd296ae5969612d5b7b872a610bfb637872d041b698415480b42e6e8ec106
The prior uncertain forecast gain helped define the new question about before and after descriptive contrasts. No fitted model or prediction from that study was used.
usesdoi:10.18112/openneuro.ds007216.v1.1.0
Source event records and metadata for the analyzed OpenNeuro ds007216 version 1.1.0.
doi:10.1016/j.neuroimage.2018.01.002
Background for the centered city response variation time course discussed in the report.
usesdoi:10.64898/2026.02.04.703882
Source study used to describe task and stored response assignment context; its brain model and results were not reproduced.

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usesMean city response time before mountain errors was 38 ms lower within stored codes in 23 people from ds007216 v1.1.0 under fixed assignments
This publication supplied the 90 archived source files and source manifest. Its exploratory immediate speed effects and code-share differences motivated the new symmetric decomposition. We use the same cohort and independently reproduce its all-cell lag-minus-one coefficient.