The adjusted 200–275 ms N2pc side-repeat contrast had a 95% t interval that included zero in 39 screened ERP CORE participants

We tested target-side repetition in ERP CORE N2pc data. The fixed model adjusted for required response pairs and other stated terms. The primary sample had 39 participants and 8,056 trials. The mean repeat-minus-switch contrast was +0.461 microvolt. Its 95% Student t interval was -0.092 to +1.014 microvolt. This leaves the average association uncertain under the fixed measurement and selection rules. Without baseline subtraction, the estimate was +0.061 microvolt on the same trials. A stricter horizontal eye-voltage screen retained only three participants. All eight planned supporting checks are reported. Independent history, voltage, QR model, and resampling checks passed. Offline analysis reproduced ten result files exactly. Fresh source replay covered all 40 records across two documented attempts. The local plan was saved before EEG retrieval. This study does not identify a neural cause. SCI retains results and the headline figure but omits copied source files and source-derived epoch and trial input caches because saved source-license records conflict; full public reanalysis therefore requires retrieving the linked source inputs.

N2pc · ERP CORE · EEG · spatial attention · target-side repetition · event-related potentials