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http://hdl.handle.net/1942/30930
Title: | Cerebellar induced differential polyglot aphasia: A neurolinguistic and fMRI study | Authors: | Marien, P. VAN DUN, Kim Van Dormael, J Vandenborre, D Keulen, S Manto, M Verhoeven, J Abutalebi, J |
Issue Date: | 2017 | Publisher: | ACADEMIC PRESS INC ELSEVIER SCIENCE | Source: | BRAIN AND LANGUAGE, 175 , p. 18 -28 | Abstract: | Research has shown that linguistic functions in the bilingual brain are subserved by similar neural circuits as in monolinguals, but with extra-activity associated with cognitive and attentional control. Although a role for the right cerebellum in multilingual language processing has recently been acknowledged, a potential role of the left cerebellum remains largely unexplored.This paper reports the clinical and fMRI findings in a strongly right-handed (late) multilingual patient who developed differential polyglot aphasia, ataxic dysarthria and a selective decrease in executive function due to an ischemic stroke in the left cerebellum. fMRI revealed that lexical-semantic retrieval in the unaffected L1 was predominantly associated with activations in the left cortical areas (left prefrontal area and left postcentral gyrus), while naming in two affected non-native languages recruited a significantly larger bilateral functional network, including the cerebellum. It is hypothesized that the left cerebellar insult resulted in decreased right prefrontal hemisphere functioning due to a loss of cerebellar impulses through the cerebello-cerebral pathways. | Keywords: | Cerebellum;Polyglot aphasia;Bilingualism;fMRI;Differential recovery | Document URI: | http://hdl.handle.net/1942/30930 | ISSN: | 0093-934X | e-ISSN: | 1090-2155 | DOI: | 10.1016/j.bandl.2017.09.001 | ISI #: | WOS:000418311600003 | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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