Title :
Multiple-window spectrogram of peaks due to transients in the electroencephalogram
Author :
Hansson, Maria ; Lindgren, Magnus
Author_Institution :
Dept. of Electrosci., Lund Univ., Sweden
fDate :
3/1/2001 12:00:00 AM
Abstract :
Peak matched multiple windows (PM MW) were used to estimate the spectrogram of the electroencephalogram (EEG). The authors focussed on the ability to estimate frequency changes, and especially resolving close peaks. A peak of known frequency was evoked in the EEG in a predetermined time interval. The PM MW spectrogram was compared to the commonly used single Hanning window and to weighted overlapped segment averaging in simulations and for real-data. The PM MW were shown to give estimates with good resolution and low variance.
Keywords :
electroencephalography; medical signal processing; spectral analysis; EEG transients; electrodiagnostics; electroencephalogram peaks; good resolution low variance estimates; multiple-window spectrogram; single Hanning window; weighted overlapped segment averaging; Brain modeling; Degradation; Eigenvalues and eigenfunctions; Electrodes; Electroencephalography; Frequency estimation; Graphics; Helium; Spectrogram; Transient analysis; Algorithms; Analysis of Variance; Computer Simulation; Electroencephalography; Humans; Models, Neurological; Reference Values; Signal Processing, Computer-Assisted;
Journal_Title :
Biomedical Engineering, IEEE Transactions on