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Title: Determination of dominant simulated spindle frequency with different methods
Authors: Huupponen, Eero ×
De Clercq, Wim
Gómez-Herrero, Germán
Saastamoinen, Antti
Egiazarian, Karen
Värri, Alpo
Vanrumste, Bart
Vergult, Anneleen
Van Huffel, Sabine
Van Paesschen, Wim
Hasan, Joel
Himanen, Sari-Leena #
Issue Date: Sep-2006
Publisher: Elsevier/North-Holland
Series Title: Journal of Neuroscience Methods vol:156 issue:1-2 pages:275-283
Abstract: Accurate analysis of EEG sleep spindle frequency is challenging. The frequency content of true sleep spindles is not known. Therefore, simulated spindle activity was studied in the present work. Five types of simulated test signals were designed, all containing a dominant spindle represented by a 13-Hz sine wave as such or with a waxing and waning pattern accompanied by a secondary spindle activity in three test signals. Background EEG was included in four test signals, modeled either as small additional sinusoids across the spindle frequency range or as filtered Gaussian noise segments. The purpose of this study was to investigate how accurately the dominant spindle frequency of 13 Hz could be resolved with different methods in the presence of the interfering waveforms. A matching pursuit (MP) based approach, discrete Fourier transform (DFT) with Hanning windowing with and without zero padding, Hankel total least squares (HTLS) and wavelet methods were compared in the analyses. MP method provided best overall performance, followed closely by DFT with zero padding. Comparative studies like this are important to decide the method of choice in clinical sleep EEG analysis.
URI: 
ISSN: 0165-0270
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - STADIUS, Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics
Research Group Experimental Neurology
Laboratory for Epilepsy Research
Technologiecluster ESAT Elektrotechnische Engineering
Electrical Engineering (ESAT) TC, Technology Campus Geel
Electrical Engineering (ESAT) TC, Technology Campus Diepenbeek
× corresponding author
# (joint) last author

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