Spectral Asymmetry and Higuchi’s Fractal Dimension Measures of Depression Electroencephalogram

This study was aimed to compare two electroencephalogram (EEG) analysis methods, spectral asymmetry index (SASI) and Higuchi’s fractal dimension (HFD), for detection of depression. Linear SASI method is based on evaluation of the balance of powers in two EEG frequency bands in one channel selected h...

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Bibliographic Details
Published in:Computational and mathematical methods in medicine 2013-01, Vol.2013 (2013), p.1-8
Main Authors: Hinrikus, Hiie, Suhhova, Anna, Lass, Jaanus, Bachmann, Maie
Format: Article
Language:English
Subjects:
Adult
Algorithms
Case-Control Studies
Depression - diagnosis
Depression - physiopathology
Diagnosis, Computer-Assisted - statistics & numerical data
Electroencephalography - statistics & numerical data
Female
Fractals
Humans
Linear Models
Middle Aged
Nonlinear Dynamics
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Summary:This study was aimed to compare two electroencephalogram (EEG) analysis methods, spectral asymmetry index (SASI) and Higuchi’s fractal dimension (HFD), for detection of depression. Linear SASI method is based on evaluation of the balance of powers in two EEG frequency bands in one channel selected higher and lower than the alpha band spectrum maximum. Nonlinear HFD method calculates fractal dimension directly in the time domain. The resting EEG signals of 17 depressive patients and 17 control subjects were used as a database for calculations. SASI values were positive for depressive and negative for control group (P
ISSN:1748-670X
1748-6718
DOI:10.1155/2013/251638