Electroencephalographic (EEG) recordings are employed in order to investigate the brain activity in neuropathological subjects. Unfortunately EEG are often contaminated by the artifacts, signals that have non-cerebral origin and that might mimic cognitive or pathologic activity and therefore distort the analysis of EEG. In this paper we propose a multiresolution analysis, based on EEG wavelet processing, to extract the cerebral EEG rhythms. We also present a method based on Renyi's entropy and kurtosis to automatically identify the Wavelet components affected by artifacts. Finally, we discuss as the joint use of wavelet analysis, kurtosis and Renyi's entropy allows for a deeper investigation of the brain activity and we discuss the capability of this technique to become an efficient preprocessing step to optimize artifact rejection from EEG. This is the first technique that exploits the peculiarities of EEG to Optimize EEG artifact detection.

Brain activity investigation by EEG processing: Wavelet analysis, kurtosis and Renyi's entropy for artifact detection / Inuso, G; Mammone, N; Morabito, Francesco Carlo; LA FORESTA, Fabio. - 1:(2008), pp. 195-200. (Intervento presentato al convegno International Conference on Information Acquisition, ICIA 2007 tenutosi a Jeju Island, South Korea nel July 9-11) [10.1109/ICIA.2007.4295725].

Brain activity investigation by EEG processing: Wavelet analysis, kurtosis and Renyi's entropy for artifact detection

Mammone N;MORABITO, Francesco Carlo;LA FORESTA, Fabio
2008-01-01

Abstract

Electroencephalographic (EEG) recordings are employed in order to investigate the brain activity in neuropathological subjects. Unfortunately EEG are often contaminated by the artifacts, signals that have non-cerebral origin and that might mimic cognitive or pathologic activity and therefore distort the analysis of EEG. In this paper we propose a multiresolution analysis, based on EEG wavelet processing, to extract the cerebral EEG rhythms. We also present a method based on Renyi's entropy and kurtosis to automatically identify the Wavelet components affected by artifacts. Finally, we discuss as the joint use of wavelet analysis, kurtosis and Renyi's entropy allows for a deeper investigation of the brain activity and we discuss the capability of this technique to become an efficient preprocessing step to optimize artifact rejection from EEG. This is the first technique that exploits the peculiarities of EEG to Optimize EEG artifact detection.
2008
1424412196
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12318/14606
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