IJARCCE ISSN (Online) 2278-1021 ISSN (Print) 2319 5940 International Journal of Advanced Research in Computer and Communication Engineering Vol. 4, Issue 12, December 2015 Copyright to IJARCCE DOI 10.17148/IJARCCE.2015.412143 502 EEG signals and wireless transfer of EEG Signals Md Belal Bin Heyat 1 , Shaguftah 2 , Yassir. M. Hasan 3 , Mohd Maroof Siddiqui 4 Department of ECE, Integral University, Lucknow, UP, India 1, 2, 3, 4 Abstract: The full form of the EEG signal is Electroencephalogram. EEG signal is discovered by 1300 years. Electroencephalogram is fully computerized arrangement. EEG appliances are made in many outfits, electrodes & memory. Its work as combination of neuroimaging structures i.e. FMRI. Bio potential generates neural activity of brain is known as Electroencephalogram. The many EEG wave are used in the system like alpha wave, beta wave, gamma wave, theta wave and delta wave. All waves are work as different-different amplitude, frequency & location. The time frequency analysis of the EEG signal is done by no of condition like time domain, single event, long time period etc. EEG signal are used in no of diseases like epileptic seizures, brain death etc. Wireless system are used in the electroencephalogram transmitted data through radio signal no wire are used. It’s done by fourth order Butterworth filter. Converting ADC to DAC using Atmel Atmega 1281 microcontroller. XStream-PKG-U USB used in wireless transmission of the EEG signal, X-CTU software is used in interfacing of the wireless system. Keywords: EEG signal, Electroencephalogram, ADC, DAC, Atmel Atmega 1281 microcontroller, X-CTU. 1. INTRODUCTION EEG (Electroencephalogram)-Early 1300years ongoing, it is continuous process like growth of clinical untried, finding, appreciation, analysis& management of neurological and physical anomalies of brain, EEG are completely computerized arrangement. Electroencephalogramappliances arefortified with many outfits, correct electrode and memory for muchextendedtime recording of certain hours. Electroencephalogram apparatuses may be combined with neuro imaging structures such as functional magnetic 2. TIME FREQUENCY ANALYSIS OF EEG SIGNAL o Analysis of time Domain. o Peak through a single event. o No time Information of frequency & Magnitude. o Oscillation of Neurons. Evoked & Induced oscillations are done by this analysis. o Period of time is long. o Coherence, Coupling is a sophisticated method. o Some technique is used in analysis of time frequency analysis of EEG signal i.e. Discrete Fourier Transform (DFT), Short Term Fourier Transform (STFT) etc. o 10Hz, 20Hz, 40Hz frequency, Zero amplitude & finite duration wavelets are used in frequency analysis of EEG signal. resonance imaging. Actual subtle needle such as electrodes can be secondhand for footage the Electroencephalogram over the cortex and avoid nonlinearity things induced by the Brain. Bio potential generates neural movement of mind called as EEG. Electroencephalogram signal recurrent use of stimulus, wakeful, sleep is evoked reaction. The no of EEG signal are used i.e. α wave, β wave, Ɵ wave, gamma wave, Delta wave. 3. USED OF EEG SIGNAL o Epileptic seizures o Encephalopathy o Brain death o Catatonia o Anti-epileptic medication o Anesthesia o Wada test o Prognosticate etc. 4. ADVANTAGE OF EEG o Electroencephalogram provides immediate care in high traffic hospitals. o Electroencephalogram sensors used in SPECT, MEG etc. S. No. EEG Wave Amplitude Frequency Situation 1. Alpha wave 002 to 010 μv 08 to 13 Hz Posterior positions of head, together sides, greater in amplitude non dominant side 2. Beta wave 001 to 005 μv 13 to 22 Hz Symmetrical delivery, both sides, peak evident frontally, small amplitude waves 3. Gamma wave 010 to 020 μv 22 to 30 Hz Originate location which is not related to mission at hand 4. Delta wave 020 to 400μv 0.5 to 04 Hz Subsequent of children, directly in adults 5. Theta wave 100 to 500 μv 04 to 08 Hz Location found not related to task hand