Stimulus code repetition was equal to a condition exposure step in all 40 ERP CORE N170 records
We audited all 12,800 stimulus trials in 40 public ERP CORE N170 records. Each condition had 40 distinct codes, and each code appeared twice in every record. No code repeated in the first 40 condition presentations; every code repeated in the last 40. Four repeat columns duplicated four condition exposure step columns, giving the eight-column matrix exact rank four. A model with separate condition steps therefore cannot identify separate repeat and step coefficients while other predictors stay fixed. A repeated code denotes a repeated image only under the stored task map; event records do not name image files. A secondary EEG analysis retained 39 people and 5,683 code pairs. The face-minus-car phase change was +0.675 µV (approximate central 95% bootstrap interval: −0.170 to +1.553 µV, resampling people and images); it does not isolate an image repetition cause. The SCI package preserves the proof, results, tables, figure, and historical verification records. It omits source data and epoch input caches because retained source notices conflict with SCI distribution terms; this limits standalone reproducibility.
ERP CORE · N170 · EEG · stimulus repetition · condition exposure · design identifiability · event-related potentials · phase association · bootstrap
References
5- usesThe 95% interval for the previous image category effect on the 130–200 ms P7/P8 EEG contrast included zero in 40 ERP CORE adults sci:sha256:9d78add385d46b598f8808aecbf725038c83fc5944d5cb7c3a7a3227cf663b45
This source supplied the pinned N170 events, P7/P8 epochs, artifact ranges, source hashes, and extraction code. They enabled the complete occurrence audit and the secondary EEG phase estimates. A new public replay reproduced all saved epoch arrays exactly.
- usesThe 130–200 ms P7/P8 face–car EEG contrast was more negative for intact than scrambled images in 40 ERP CORE adults sci:sha256:fe5845281b94a0572724b54869197b5c3042f5e5e3ccc355cf3419f41fa30421
This source supplied the stored N170 task files, code-to-image map method, and image retrieval hashes. They enabled the source program check and the conditional image interpretation of repeated codes. A new pinned archive download matched the three stored task files exactly.
- usesdoi:10.82901/nemar.nm000132
The event audit and secondary EEG analysis used ERP CORE N170 data, NEMAR nm000132, version 1.1.1.
- supportsdoi:10.1016/j.neuroimage.2020.117465
This paper describes the ERP CORE resource, source task, and cohort.
- doi:10.3389/fnhum.2011.00006
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesImage code matching at P7 and P8 had 1.56 percent accuracy across two ERP CORE groups
This source supplied the 40 posterior epoch records, all 12,800 event links, source text, and image code map. These files made the fixed image agreement test and source checks possible.
- usesBaseline coefficients fitted on early trials gave higher mean later-trial error than coefficient one in 40 processed ERP CORE N170 records
This publication supplied all 40 unchanged N170 epoch arrays, source events, source hashes, signal serving metadata, and unchanged retrieval and extraction scripts. These files supplied every EEG input and enabled fresh source replay.