Abstract
Electroencephalography (EEG) signals recording are the mixture of electrical potentials generated from different sources. These signals are influenced by different potentials. Currently, there exists no measure that can evaluate the measure influence among the signals. A new measure of influence has been proposed based on the distribution of correlation (DCOR) that quantifies the relative influence of constituent sub-band signals over full band signal. To estimate the inter-influence, scaled correlation analysis of signal sub-components is investigated. Results so obtained demonstrate that the signal influence of highest-frequency components present in the signal is more in case of linear/stationary signals, compared with non-linear/non-stationary (EEG/event related potential) signals. These findings are concluded with two types of analysis: (i) mixed influence analysis and (ii) mutual influence analysis. It is demonstrated that for separation of negative and positive correlations (CORs) using the proposed novel measure of signal influence (DCOR) is 14.24% better than other conventional COR method.
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