Title :
Spectral and Fractal Analysis of Biosignals and Coloured Noise
Author_Institution :
Belgrade Univ., Belgrade
Abstract :
The amplitude power spectra and fractal dimensions of surrogate data designed as coloured noise were compared with spectra and FDs of biosignals in order to improve the tools for brain activity analysis. It is interesting if biosignals yielded spectral indices and fractal dimension values different from almost all of those of surrogate data, could we have more confidence that original biosignals (brain activities) arised from a nonlinear process.
Keywords :
brain; fractals; medical signal processing; noise; spectral analysis; amplitude power spectra; biosignals; biosignals yielded spectral indices; brain activities; brain activity analysis; coloured noise; fractal analysis; nonlinear process; spectral analysis; surrogate data; 1f noise; Autocorrelation; Brain; Colored noise; Fractals; Frequency; Gaussian noise; Signal analysis; Spectral analysis; Time series analysis;
Conference_Titel :
Intelligent Systems and Informatics, 2007. SISY 2007. 5th International Symposium on
Conference_Location :
Subotica
Print_ISBN :
978-1-4244-1442-0
Electronic_ISBN :
978-1-4244-1443-7
DOI :
10.1109/SISY.2007.4342641
