Comprehensive analysis suggests simple processes underlying EEG/ERP - demonstration with the go/no-go paradigm in
G Shahaf1, T Fisher2, J Aharon-Peretz3
1Neurology Department, Rambam Health Care Campus, Haifa, Israel.
Background:
Current basic or more advanced methods for analysis of averaged EEG/ERP are based on assumptions on the underlying processes, which are not necessarily precise.
New Method:
In this work we present the findings of a method which obviates such assumptions and aims at a comprehensive analysis of the averaged EEG/ERP signal.
Results:
For the sake of demonstration we chose the established go/no-go paradigm in the context of ADHD. Our analysis method characterized two spatiotemporally distinct neurophysiologic processes which underlie the sampled signal: one which may be related to attention and the other which may be more related to perception.
Comparison With Existing Method(S):
We show how these processes accord with and provide insight on the waveforms reported in the literature.
Conclusions:
Finally we suggest that application of our method on averaged EEG/ERP data sampled from other paradigms may point at a similarly parsimonious set of underlying neurophysiologic processes which underlie the signal.
