Other neurological conditions, previous psychiatric or developmental diagnosis of MS

Head injury sequelae

Chronic alcohol or drugs Taking

EDSS greater than or equal to 6

Secondary Progressive Form

Push and / or treatment with corticosteroids within one month

Treatments Amantadine, Modafinil introduced for less than 3 months

Patient Trust

Cognitive Assessment of less than one year (including in particular all or part of the balance sheet proposed in this project)

Any visual motor deficit or incompatible with the award of cognitive tests

For women, pregnancy, breastfeeding and / or lack of contraception (a pregnancy test will be done before the PET scan)

Patient with indications against MRI

Influence of Emotional Disorders and Executive on the Components Retrograde and Anterograde Episodic Memory in MS