Emotions in Multiple Sclerosis

Different studies have highlighted the specific deficiency concerning emotions recognition in multiple sclerosis. Patients with multiple sclerosis are reported to have more difficulty recognising negative emotions, especially anger and fear. In this context, RECODE study has a twofold objective: * To determine whether the positive emotions recognition remains preserved by combining behavioural and neurophysiological measures (electrodermal activity). * To study this disorder's etiology through a comparison between a multiple sclerosis patient group and a control group (matched in sex, age, and education's level).