Figure 2From: Cluster analysis of behavioural and event-related potentials during a contingent negative variation paradigm in remitting-relapsing and benign forms of multiple sclerosis Event-Related Potentials (ERP) elicited by cues and the subsequent CNV period for the three groups in different positions of the scalp. The black arrow indicates when the cue stimulus is presented and the black arrow with an asterisk when the imperative stimulus is presented. The marked black lines represent: eCNV, cCNV and tCNV periods.Back to article page