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Detection and Removal of Non-responsive Channels and Trials in Evoked Potentials using Median test

Author(s): V. Adinarayana Reddy | P. Chandra Sekhar Reddy | G. Hemalatha | B. Anuradha | T. Jaya Chandra Prasad

Journal: Signal & Image Processing
ISSN 2229-3922

Volume: 2;
Issue: 4;
Start page: 37;
Date: 2012;
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Keywords: evoked potentials | energy | median..

The primary goal of this research work is to detect and remove non responsive channels and trials inevoked potentials by tracing out the signals with very low energy. This is done by calculating the energy ofthe average evoked potential of each channel, and the energy of the average evoked potential of each trial.Then channel wise and trial wise median test is conducted to detect and remove non-responsive channelsand trials. An attempt has been made to apply these techniques to 14-channel visual evoked potentials(VEPs) obtained from four different subjects.
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