Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6028576 | NeuroImage | 2014 | 12 Pages |
Abstract
We show that it is possible to successfully predict subsequent memory performance based on single-trial EEG activity before and during item presentation in the study phase. Two-class classification was conducted to predict subsequently remembered vs. forgotten trials based on subjects' responses in the recognition phase. The overall accuracy across 18 subjects was 59.6% by combining pre- and during-stimulus information. The single-trial classification analysis provides a dimensionality reduction method to project the high-dimensional EEG data onto a discriminative space. These projections revealed novel findings in the pre- and during-stimulus periods related to levels of encoding. It was observed that the pre-stimulus information (specifically oscillatory activity between 25 and 35 Hz) â 300 to 0 ms before stimulus presentation and during-stimulus alpha (7-12 Hz) information between 1000 and 1400 ms after stimulus onset distinguished between recollection and familiarity while the during-stimulus alpha information and temporal information between 400 and 800 ms after stimulus onset mapped these two states to similar values.
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Authors
Eunho Noh, Grit Herzmann, Tim Curran, Virginia R. de Sa,