The congruency sequence term duplicated the repetition interaction in 40 ERP CORE v1.1.1 flanker records under the recorded arrow map
We tested whether congruency history could be separated from target and distractor repetitions in NEMAR ERP CORE v1.1.1. Under the recorded arrow map, two signed interaction columns were equal in all 15,954 adjacent stimulus pairs from 40 records. The seven-column model had rank six. It could not give unique coefficients to both interactions. The proof applies to two shared feature values when congruency means target-distractor equality. A reusable exact tool checks the specific sequence coefficient and returns null-space certificates. In an example with separate feature sets, the sequence coefficient remained unique despite redundant nuisance columns. In a selected 39-person sample, the mean descriptive sequence contrast was 5.91 ms. Its 95% person bootstrap interval was 0.63 to 11.01 ms. All five planned secondary checks retained positive contrasts. A new public download matched 131 source and author-file hashes. A complete repeat reproduced all 29 numerical files byte for byte. The original analysis package preserves code, source events, exact proofs, results, and repeat instructions. This SCI redistribution links incompatible third-party source files externally. The result does not test EEG signals or isolate a biological control mechanism.
flanker task · congruency sequence effect · feature repetitions · coefficient identifiability · design matrix · rank deficiency · exact arithmetic · cognitive control · ERP CORE · response time
References
7- usesHED outcome tags encoded recorded target direction in all 15,962 single-response flankers trials in NEMAR ERP CORE v1.1.1 sci:sha256:9aeb2b661f8b5ba4c8074c4bd41221340e93ead507e45b147177ee591b96c99c
We reused its archived ERP CORE v1.1.1 source text, source hash manifest, and author-code retrieval information. These files enabled the physical-feature design audit. A new public download matched all source bytes. We did not use its analysis code, EEG arrays, or numerical results.
- usessci:sha256:a9d0c3c4da323ae0993ea1f995e24ee886cb56f293f3d77f7c2a52bee95fc4f1 not known to Sciscape
Its study of flanker score reliability motivated our question about whether a sequence score can separate conflict history from feature repetitions. We inspected its event schema. The required physical feature labels were absent. We selected ERP CORE for the new audit and did not reuse its data or scores.
- usesdoi:10.82901/nemar.nm000132
The analysis used the 40 flanker event files in NEMAR ERP CORE version 1.1.1; the exact-version dataset metadata records this DOI.
- usesdoi:10.18115/D5JW4R
The saved NEMAR source metadata identifies this DOI as the original OpenNeuro ERP CORE resource.
- doi:10.1016/j.neuroimage.2020.117465
- doi:10.31234/osf.io%2F4azqm
- doi:10.1371/journal.pone.0102337
Cited by
3 publicationsPublic catalog entries on Sciscape.
- usesThe mean flanker sequence score was larger for repeated response sides in 276 selected ds007139 v1.0.0 participants
Its binary feature design proof guided the interpretation of our response side comparison. It showed why a sequence term can duplicate a physical feature repetition interaction under a two-direction arrow map. We used a different cohort and new code. We did not reuse its ERP CORE data or behavioral estimates.
- usesEarly flanker sequence scores gave no clear gain over peer means under linear prediction in 270 selected ds007139 v1.0.0 people
Its exact binary-feature design proof limits the causal interpretation of a flanker sequence score. Equal response-transition weights do not isolate a neural control mechanism.
- usesError history and target repetition fixed response repetition in ds006018 correct flanker trials under its binary response map
The earlier binary design proof and exact rank check guided this model audit. We test a different dependency between error history, target repetition, and hand repetition. We use different data and new code. We do not reuse its source data or behavior estimates.