De-noised Event Related Potentials in facial Emotion recognition

The key point in the de-noising of Event-Related Potentials (ERP) is to give a clear visualization of ERP between different trials representing different types of emotions (Anger, Surprise, Fear, Sadness, Happiness, Neutral).We used 6 pictures representing each emotion as a stimulus to a male actor and recorded a total of 60ERP trials 10 for each emotion. A Mexican hat wavelet was used to de-noise recorded ERPs. A better estimation of both amplitude and latency was achieved, together with a clear variation between noise free trials thus an easy way to Emotion recognition.