Analysis of fractal dimension of EEG signals under mobile phone radiation

The concern about the adverse effects of mobile phone radiation on the nervous system has increased due to the drastic increase in the number of phone users. The electroencephalogram (EEG), a record of the oscillations of brain electric potentials reveals the synaptic action that strongly co-relate with brain state. As the EEG signal is non linear, non stationary and noisy, non linear methods will be suitable for the analysis. Fractal dimension (FD) is a useful concept in describing natural objects, which gives their degree of complexity. We used the fractal dimension (FD), a measure of complexity to analyze the effect of radiation while using mobile phone. Then fractal dimension of the complete data set for 21 electrodes were analyzed using Kruskal Wallis test. The test is significant for two electrodes. Then FD of different classes of EEG signals namely delta, theta alpha, beta and gamma for 21 channels were tested with Kruskal Wallis test, which is significant for three electrodes in gamma band. It can be concluded that as a whole, there is no effect on EEG complexity while using mobile phone.

[1]  Saeid Sanei,et al.  EEG signal processing , 2000, Clinical Neurophysiology.

[2]  A. T. Harding,et al.  Probability and statistics for engineers , 1969 .

[3]  I. Cosic,et al.  Human brain wave activity during exposure to radiofrequency field emissions from mobile phones , 2010, Australasian Physics & Engineering Sciences in Medicine.

[4]  Hiie Hinrikus,et al.  Non-Thermal Effect of Microwave Radiation on Human Brain , 2005 .

[5]  Abdullah Al Jumah,et al.  Denoising of an Image Using Discrete Stationary Wavelet Transform and Various Thresholding Techniques , 2013 .

[6]  N. K. Narayanan,et al.  Effect of mobile phone radiation on brain using EEG analysis by Higuichi's fractal dimension method , 2012, Other Conferences.

[7]  James C. Lin.  Cellular telephone radiation and electroencephalograms (EEG) of the human brain , 2003 .

[8]  Samir Avdakovic,et al.  Energy Distribution of EEG Signals: EEG Signal Wavelet-Neural Network Classifier , 2010, ArXiv.

[9]  Chulho Kim,et al.  Clinical features of headache associated with mobile phone use: a cross-sectional study in university students , 2011, BMC neurology.

[10]  Konstantina S. Nikita,et al.  Estimation of fractal dimension of images using a fixed mass approach , 1999, Pattern Recognit. Lett..

[11]  Christos N. Capsalis,et al.  Influence of the Interaction of a 900 MHz Signal with Gender on EEG Energy: Experimental Study on the Influence of 900 MHz Radiation on EEG , 2005 .

[12]  I. Cosic,et al.  Comparison of the effects of continuous and pulsed mobile phone like RF exposure on the human EEG , 2007, Australasian Physics & Engineering Sciences in Medicine.

[13]  Brian Litt,et al.  A comparison of waveform fractal dimension algorithms , 2001 .

[14]  N. K. Narayanan,et al.  Study of brain dynamics under mobile phone radiation using various fractal dimension methods , 2013, 2013 International Conference on Signal Processing , Image Processing & Pattern Recognition.

[15]  P. Agostino Accardo,et al.  Use of the fractal dimension for the analysis of electroencephalographic time series , 1997, Biological Cybernetics.

[16]  T. Higuchi.  Approach to an irregular time series on the basis of the fractal theory , 1988 .

[17]  N. K. Narayanan,et al.  Effects of Mobile Phone Radiation on BrainUsing Statistical Parameters and ItsDerivatives , 2014 .

[18]  Clifton Frilot,et al.  Nonlinear changes in brain electrical activity due to cell phone radiation , 2003, Bioelectromagnetics.

[19]  Ashok Agarwal,et al.  Effect of cell phone usage on semen analysis in men attending infertility clinic: an observational study. , 2008, Fertility and sterility.

[20]  Yan Li,et al.  Measuring and Reflecting Depth of Anesthesia Using Wavelet and Power Spectral Density , 2011, IEEE Transactions on Information Technology in Biomedicine.

[21]  G. Breton,et al.  Monitoring the effects of mobile phone use on the brain by proton magnetic resonance spectroscopy , 2006, International journal of radiation biology.

[22]  Konstantina S. Nikita,et al.  Comparison of fractal dimension estimation algorithms for epileptic seizure onset detection , 2008, BIBE.

[24]  N. K. Narayanan,et al.  Effect of Mobile Phone Radiation on Brain Using Wavelet Energy , 2014 .