The detection of Evoked Potential with variable latency and multiple trial using Consensus matching pursuit

In this paper, we use Consensus version of the matching pursuit algorithm (CMP) which fit to the noisy Evoked Potential signal persistent in all responses (trial). The Evoked Potential EP is a specific wave resulted from a stimulus. This research is performed in a highly redundant time-frequency dictionary of Gabor functions. For phase-locked Evoked Potential trials, we conclude that the morphology of EP signal obtained by a reconstructed signal can be very well explained with a good quality of energy ratio factor (QR). However for a noisy and jitter EP, we couldn´t optimally reconstruct our original data due to random atoms of CMP dictionary. So our strategy consists to select only the significant atoms to rebuild an EP signal. Using this test, we can reach a good QR ratio.