The 95% interval for the previous image category effect on the 130–200 ms P7/P8 EEG contrast included zero in 40 ERP CORE adults

We tested whether the previous image category changed the face-minus-car EEG contrast in the N170 task of ERP CORE. We used all 40 adults in NEMAR nm000132 v1.1.1 and its 250 Hz signal conversion. The fixed analysis measured mean voltage at P7 and P8 from 130 to 200 ms. It used a 150 microvolt artifact limit and 2,943 trials. The mean interaction was -0.142 microvolts. Its 95% person-bootstrap interval was [-0.832,+0.475] microvolts. All six planned checks had intervals that included zero. This does not prove a zero effect. A separate check found coarse signal quantization in two records. After removal of these records, the interval also included zero. The package preserves all 12,800 posterior epochs, full trial histories, source metadata and hashes, code, results, the fixed plan, and commands for exact offline reproduction. It also gives a hash-checked recipe to retrieve the continuous source. The result applies to this sample, image set, timing, processing, and signal conversion.

N170 · EEG · ERP CORE · NEMAR · event-related potentials · visual perception · trial history · bootstrap interval

Admitted 2026-11-09 18:44 UTC16 citing publications

References

usesMatching response time made the mean 0–100 ms FCz error contrast less negative in 25 ERP CORE adults with a 150 µV artifact limit sci:sha256:d6a13dfe3872f874482d99e2a2766bbd91908e9a8a9254422a457e6a83c08853
This study uses the pinned NEMAR serving index and adapts the source scale, timing, channel, and signal retrieval checks from this publication. It retrieves and analyzes the N170 task separately.
usesdoi:10.82901/nemar.nm000132
The analysis uses all 40 N170 records from NEMAR nm000132, version 1.1.1, including its 250 Hz serving conversion.
doi:10.1016/j.neuroimage.2020.117465
doi:10.3389/fnhum.2011.00006

Cited by

16 publications

Public catalog entries on Sciscape.

usesWith fixed ERP CORE images, 130–200 ms P7/P8 face–car EEG agreement was lower after scrambled image subtraction within one visit in 39 adults
This work uses the inherited continuous-signal retrieval and epoch extraction code through publication b26ae918-ba14-46c2-9aa1-ee7fb8fdd394. A fresh check of three public records matched every epoch array and event file.
usesMean padding kept 250 Hz ERP scores stable under two constant channel offset tests in three selected ERP CORE records
This work supplied the serving hashes, channel voltage-step audit, trial timing, reference, filters, and artifact rules. These items set the record selection and fixed ERP measurement.
usesRemoving standards after rare tones made the 125–225 ms FCz contrast 0.22 microvolts less negative in 40 ERP CORE adults with a P9/P10 reference
We adapted its retrieval code and signal-processing checks for the MMN task. They supplied scale, timing, and eye-channel checks. All MMN signals and event files were retrieved separately. The N170 result was not used as data.
usesAn early baseline fit increased mean squared 130–200 ms P7/P8 voltage prediction error versus full subtraction in 20 separate ERP CORE adults under saved filters
This work supplied the original serving-layer retrieval and epoch extraction inherited by the immediate input. We retained the pinned source recipe and hashes and rebuilt its epoch arrays for all 40 adults.
usesCell residuals gave 46.66% of added bootstrap variance in 40 complete ERP CORE N170 records
This upstream publication supplied the signal retrieval and epoch extraction code, original event files, served signal metadata, hashes, and all 40 posterior epoch records, through the later preserved package.
usesThe fixed image code correction increased 130–200 ms P7/P8 EEG prediction error on late trials in 40 ERP CORE adults
Uses the preserved signal retrieval and epoch extraction programs. This run reconstructed all 40 epoch files from hash-checked public signals.
usesStimulus code repetition was equal to a condition exposure step in all 40 ERP CORE N170 records
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.
usesSeparate image subsets reduced saved ERP CORE EEG mean squared error under uniform draws without replacement at 6,400 trials
This work uses the inherited processing code, source metadata, and retrieval recipe. Two retrieved continuous records reproduce every saved epoch array exactly. The remaining records are used as preserved in the cited archive.
usesA selected image template did not improve 130–200 ms P7/P8 EEG prediction in a fixed 20-person ERP CORE test group
We reused its retrieval and extraction scripts in the preserved upstream package. These scripts retrieve public continuous records by recorded hashes and replay them against the saved epochs.
usesThe 95 percent gain interval included zero for previous trial EEG scores in 39 ERP CORE adults under fixed offline N170 models
This publication supplied the earlier previous category test and the original artifact range method. It informed the category controls and the interpretation of the inherited ranges.
usesChanging zero padding to edge padding changed the last trial P7/P8 mean by more than 10 microvolts in 28 of 40 ERP CORE N170 records under fixed filters
We retained this N170 extraction method: source event codes, the 26 native sample display-delay correction, scalp reference, P7/P8 measure, and fixed full-record filters. The native conversion audit is new.
usesImage code matching at P7 and P8 had 1.56 percent accuracy across two ERP CORE groups
The signal extraction code, continuous signal retrieval recipe, server metadata, and epoch format came through f400e314-d4cd-4da4-92c4-dd8770803aa1. This run preserved those methods and used them to replay two complete source records.
usesExact split disagreement formulas apply to fixed paired scores with equal trial counts and independent condition splits
This publication supplied all 12,800 posterior EEG epochs, source text, source manifests, and retrieval and extraction code. We used these inputs to calculate paired image scores. We retrieved the continuous serving signals and reproduced all arrays for all 40 people.
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 the original N170 epoch method preserved in the source package. We used its scale conversion, reference, filters, display-delay correction, epoch arrays, and artifact range definitions.
usesFixed P7/P8 scores differed by up to 36.960 microvolts between source and served EEG under 0.1 to 30 Hz filters in 40 ERP CORE records
This publication supplied the pinned serving hashes, source text, fixed P7/P8 extraction design, stored epochs, and artifact ranges. We used them to retrieve and check the same files, replay served measurements, and hold artifact selection fixed.
usesThe 130–200 ms P7/P8 face–car EEG contrast was more negative for intact than scrambled images in 40 ERP CORE adults
We used its 40 all-stimulus P7/P8 epoch files and source event tables. We also used its source hashes and retrieval and extraction code. These files enabled the four-condition EEG contrast and the bootstrap that samples persons and images. Fresh source extraction checked every preserved array.