Fig. 6From: Single-trial extraction of event-related potentials (ERPs) and classification of visual stimuli by ensemble use of discrete wavelet transform with Huffman coding and machine learning techniquesAverage ERP from 40 trials of one subject at Pz a target trials and b standard trials. Single trials bandpass EEG signal (black), reconstructed ERP signal from optimum wavelet coefficients (red) of one subject (five out of 40 trials) at Pz c target trials, and d standard trialsBack to article page