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q-bio.NC · Neurons and Cognitionstat.ME · Methodology

With 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

We tested whether scrambled image subtraction changes repeat agreement of a posterior EEG score. The data were 39 eligible adults from ERP CORE. Each exact image appeared twice in one visit. The mean voltage window was 130 to less than 200 ms at P7/P8. The concordance correlation coefficient was 0.722 for face minus car and 0.599 after control subtraction. The paired difference was -0.123. Its approximate 95% person bootstrap interval was [-0.272, -0.003] with fixed images. The interval was [-0.470, 0.119] when image pairs were also sampled. Two planned secondary agreement intervals included zero. The evidence applies to the tested images and signal processing; it does not show lower agreement for new images. Results, scores, bootstrap draws, checks, and the figure are included. Source event tables, extracted epochs, source event tables, extracted epoch inputs, and analysis code are omitted because of conflicting source terms and SCI license requirements. This work does not measure agreement across visits.

ERP CORE · EEG · event-related potentials · repeat agreement · concordance correlation coefficient · scrambled image subtraction · bootstrap

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References

7
  1. 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 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.

  2. 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 work uses the preserved all-stimulus P7/P8 epochs, source event tables, image code mapping, and source audit. It adds first and second occurrence labels and compares paired agreement before and after scrambled image subtraction.

  3. doi:10.1016/j.neuroimage.2020.117465
  4. usesdoi:10.82901/nemar.nm000132

    The analysis uses ERP CORE records served as NEMAR nm000132 version 1.1.1, as stated in the publication.

  5. doi:10.18115/D5JW4R
  6. doi:10.2307/2532051
  7. doi:10.1214/07-AOAS122

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