The cerebellar cognitive affective/Schmahmann syndrome: a task force paper
Sporadically advocated over the last two centuries, a cerebellar role in cognition and affect has been rigorously established in the past few decades. In the clinical domain, such progress is epitomized by the ‘cerebellar cognitive affective syndrome’ (‘CCAS’) or ‘Schmahmann syndrome’. Introduced in the late 1990s, CCAS reflects a constellation of cerebellar-induced sequelae, comprising deficits in executive function, visuospatial cognition, emotion-affect, and language, over and above speech.