Figure 4From: A signal-processing-based technique for P300 evoked potential detection with the applications into automated character recognitionA typical plot of an averaged P300 waveform. Also, an example of a possible feature vector consisting of a set of EEG samples in the vicinity of 300Â ms, say, from the 57th to the 65th samples, given the sampling rate 240Â Hz, is indicated in red color.Back to article page