Title
Empirical mode decomposition improves detection of SSVEP.
Abstract
Steady State Visual Evoked Potentials (SSVEPs) have been used to quantify attention-related neural activity to visual targets. This study investigates how empirical mode decomposition (EMD) can improve detection accuracy and rate of SSVEPs. First, the scalp-recorded electroencephalogram (EEG) signals are decomposed into intrinsic mode functions (IMFs) by EMD. Then, IMF components accounting for SSVEPs are selected for target frequency detection. Finally, target frequency is identified by two methods: Gabor transform and Canonical Correlation Analysis (CCA). This study quantitatively explores the impact of EMD on the target frequency detection. Empirical results show that the EMD improves their recognition accuracy when Gabor transform is used, even in a shorter Gaussian window, but has little effects on the performance of the CCA. Further, this study finds that harmonic responses of the target frequency can be used to enhance the SSVEP detection both for the Gabor transform and CCA.
Year
DOI
Venue
2013
10.1109/EMBC.2013.6610397
EMBC
Keywords
Field
DocType
eye,gabor transform,recognition accuracy,signal denoising,medical signal detection,neurophysiology,visual target,electroencephalography,target frequency detection,medical signal processing,harmonic response,visual evoked potentials,steady state visual evoked potential detection,empirical mode decomposition,ssvep detection enhancement,gaussian window,transforms,canonical correlation analysis,intrinsic mode function,eeg scale signal recording,correlation methods,attention-related neural activity quantification,harmonic analysis,correlation,time frequency analysis,accuracy,visualization
Computer science,Canonical correlation,Frequency detection,Artificial intelligence,Gabor transform,Electroencephalography,Computer vision,Neurophysiology,Pattern recognition,Harmonic,Speech recognition,Gaussian,Hilbert–Huang transform
Conference
Volume
Issue
ISSN
2013
null
1557-170X
Citations 
PageRank 
References 
1
0.46
4
Authors
6
Name
Order
Citations
PageRank
Liya Huang151.17
Xiaoxia Huang262.20
Yijun Wang330846.68
Yijun Wang46615.92
Tzyy-Ping Jung51410202.52
Chung-Kuan Cheng62314285.85