R. Suresh Kumar* and P. Manimegalai Pages 1 - 7 ( 7 )
Objective: The EEG signal extraction offers an opportunity to improve the quality of life in patients, which has lost to control the ability of their body, with impairment of locomotion. Electroencephalogram (EEG) signal is an important information source for underlying brain processes.
Investigation / Methodology: The signal extraction and denoising technique obtained through time-domain was then processed by adaptive line enhancer (ALE) to extract the signal coefficient and classify the EEG signals based on FF network. The adaptive line enhancer is used to update the coefficient during the runtime with the help of adaptive algorithms (LMS, RLS, Kalman Filter). In this work, the least mean square algorithm was employed to obtain the coefficient update with respect to the corresponding input signal. Finally, Matlab and verilog HDL language are used to simulate the signals and got the classification accuracy rate of 80%.
Conclusion: Experiments show that this method can get high and accurate rate of classification. In this paper, it is proposed that a low-cost use of Field Programmable Gate Arrays (FPGAs) can be used to process EEG signals for extracting and denoising. As a preliminary study, this work shows the implementation of a Neural Network, integrated with ALE for EEG signal processing. The preliminary tests through the proposed architecture for the activation function shows to be reasonable both in terms of precision and in processing speed.
EEG, FFNN, ALE, FPGA, Denoising, Extraction
Department of Electronics & Instrumentation Engineering, SNS College of Technology, Coimbatore, Department of Instrumentation Engineering, Karunya Institute of Technology & Sciences (Deemed to be University), Coimbatore, Tamil Nadu