Contingent negative variation is associated with cognitive dysfunction and secondary progressive disease course in multiple sclerosis. Uysal U, Idiman F, Idiman E, Ozakbas S, Karakas S, Bruce J J Clin Neurol. 2014 Oct; 10(4):296-303. Epub 2014 Oct 06. PMID: 25324878. Abstract CommentRecommendBookmarkWatch