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Abstract:
Abstract: False recognition of previously studied "lure"
items is a well documented manifestation of illusory memory.
However, brain imaging and ERP studies have only just begun to
elucidate the neural substrates for false memories. The goals of
our study were: 1) to determine whether or not true and false
memories could be distinguished based on their ERPs, 2) what
metrics of the ERPs are most helpful in making that distinction,
and 3) whether or not those ERP metrics could be extended to
single-trial classification of true and false memories. We found
mean Cz ERP amplitude in the 500-600 millisecond poststimulus
window to be significantly different between true and false
memories. We also used a novel, systematic application of the
wavelet transform to explore spectrotemporal metrics of the ERP.
Our evidence suggests that the spectrotemporal properties provided
by the wavelet transform show promise as a tool for distinguishing
between single trials of true and false memories.
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