Hilbert-Huang time-frequency analysis of motor imagery EEG data for brain-computer interfaces (CROSBI ID 611810)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Jerbić, Ana Branka ; Horki, Petar ; Sovilj, Siniša ; Išgum, Velimir ; Cifrek, Mario
engleski
Hilbert-Huang time-frequency analysis of motor imagery EEG data for brain-computer interfaces
Brain-computer interface (BCI) is a technology that provides a non-muscular communication channel between a brain and the outside world. Imagination of left and right hand movements results in spatially distinct brain activation patterns that can be used as control signals for the BCI. Motor imagery (MI) results in the attenuation (event related desynchronization, ERD) or enhancement (event related synchronization, ERS) of amplitude in a certain frequency band of electroencephalogram (EEG). This frequency band can vary between different participants. Therefore time-frequency (TF) analysis is performed in order to extract interesting features from EEG. A simple way of performing TF analysis is by using band power features. In this paper we investigate the perspective of Hilbert-Huang transform (HHT) for extracting TF information used for MI classification. HHT is a method that allows calculation of instantaneous frequency and amplitude of the signal. It does that by decomposing the signal into components for which these parameters can be calculated by means of Hilbert transform. We compare classification accuracy of simple band power features and features obtained by means of HHT on BCI competition IV dataset 2b.
brain-computer interface (BCI); motor imagery (MI); time-frequency (TF) analysis; Hilbert-Huang transform (HHT)
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Podaci o prilogu
62-65.
2014.
objavljeno
Podaci o matičnoj publikaciji
6th European Conference of the International Federation for Medical and Biological Engineering: IFMBE Proceedings 45
Lacković, Igor ; Vasić, Darko
Springer
1680-0737
Podaci o skupu
European Conference of the International Federation for Medical and Biological Engineering (6 ; 2014)
predavanje
07.09.2014-11.09.2014
Dubrovnik, Hrvatska