Repeating the stimulus multiple times and averaging the signals reduces the uncorrelated ongoing activity and reveals the evoked field.
Thus, researchers using AEF often deals with the global responses of the whole brain at the cortical level while focusing on the role of the auditory pathway.
The common applications of AEF are prenatal and neonatal hearing screening, cortical pitch perception, language comprehension, and attention.
In 2007, Lütkenhöner et al. demonstrated that M100 can be applied to estimate hearing threshold to a higher degree of accuracy.
[6] Longer latency responses after 100 ms are referred as event-related field (ERF) that includes M150, M200, M300 (equivalent of P300),[7] and M400.