venient window on the mind, revealing synaptic action that is moderately to strongly co-relate with brain state. Fractal dimension, measure of signal complexity can be used to characterize the physiological conditions of the brain. As the EEG signal is non linear, non stationary and noisy, non linear methods will be suitable for the analysis. In this paper Higuichi’s fractal method is applied to find the fractal dimension. EEGs of 5 volunteers were recorded at rest and on exposure to radiofrequency (RF) emissions from mobile phones having different SAR values. Mobiles were positioned near the ears and then near the cz position. Fractal dimensions for all conditions are calculated using Higuich’s FD estimation algorithm. The result shows that there are some changes in the FD while using mobile phone.
The change in FD of the signal varies from person to person. The changes in FD show the variations in EEG signal
while using mobile phone, which demonstrate transformation in the activities of brain due to radiation.