The cerebellum: Its role in language and related cognitive and affective functions

► Review of cerebellar involvement in various linguistic processes. ► Lexical retrieval, syntax, aphasia, reading, writing, metalinguistic skills. ► Cerebellar role in cognitive and behavioral–affective modulation. ► Cerebellar-induced syndromes: cerebellar cognitive affective syndrome and the posterior fossa syndrome. ► Mechanisms involved in linguistic and cognitive processing. The traditional view on the cerebellum as the sole coordinator of motor function has been substantially redefined during the past decades. Neuroanatomical, neuroimaging and clinical studies have extended the role of the cerebellum to the modulation of cognitive and affective processing. Neuroanatomical studies have demonstrated cerebellar connectivity with the supratentorial association areas involved in higher cognitive and affective functioning, while functional neuroimaging and clinical studies have provided evidence of cerebellar involvement in a variety of cognitive and affective tasks. This paper reviews the recently acknowledged role of the cerebellum in linguistic and related cognitive and behavioral–affective functions. In addition, typical cerebellar syndromes such as the cerebellar cognitive affective syndrome (CCAS) and the posterior fossa syndrome (PFS) will be briefly discussed and the current hypotheses dealing with the presumed neurobiological mechanisms underlying the linguistic, cognitive and affective modulatory role of the cerebellum will be reviewed.