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Title: Impaired Verb-Related Morphosyntactic Production in Multiple Sclerosis: Evidence From Greek
Authors: Fyndanis, Valantis 
Messinis, Lambros 
Nasios, Grigorios 
Dardiotis, Efthimios 
Martzoukou, Maria 
Pitopoulou, Maria 
Ntoskou, Aikaterini 
Malefaki, Sonia 
Major Field of Science: Medical and Health Sciences
Field Category: Basic Medicine
Keywords: Grammatical aspect;Greek;Morphosyntactic production;Relapsing-remitting multiple sclerosis;Secondary progressive multiple sclerosis;Subject–verb agreement;Time reference/tense
Issue Date: 27-Aug-2020
Source: Frontiers in Psychology, 2020, vol. 11, articl. no. 2051
Volume: 11
Journal: Frontiers in Psychology 
Abstract: Background: A recent systematic review found that language deficits are not very common in individuals with multiple sclerosis (MS). However, there are significant gaps in our knowledge about language abilities in MS. For instance, morphosyntactic production has not been explored adequately thus far. This study investigated verb-related morphosyntactic production in MS focusing on Greek, a morphologically rich language. Methods: A sentence completion task tapping into the production of subject–verb agreement, time reference/tense, and grammatical aspect was administered to 39 Greek-speaking individuals with MS [25 individuals with relapsing-remitting MS (RRMS group) and 14 individuals with secondary progressive MS (SPMS group)]. The task included only regular verbs. Generalized linear mixed-effects models were used to investigate the ability of individuals with MS to produce the above-mentioned morphosyntactic categories. Results: Overall, the RRMS and SPMS groups performed significantly worse than their matched control groups. Moreover, all four groups performed significantly worse on grammatical aspect than on subject–verb agreement and time reference. The difference between subject–verb agreement and time reference was not significant in any of the four groups. The overall performances of the RRMS and SPMS groups did not differ significantly. Conclusion: Individuals with MS are impaired in verb-related morphosyntactic production. Moreover, the pattern of performance of individuals with MS is identical to that exhibited by neurologically healthy individuals. Thus, the production performance of individuals with MS on verb inflection differs from that of healthy controls quantitatively but not qualitatively.
ISSN: 1664-1078
DOI: 10.3389/fpsyg.2020.02051
Rights: © 2020 Fyndanis, Messinis, Nasios, Dardiotis, Martzoukou, Pitopoulou, Ntoskou and Malefaki.
Attribution-NonCommercial-NoDerivatives 4.0 International
Type: Article
Affiliation : University of Oslo 
Cyprus University of Technology 
University of Patras Medical School 
University of Ioannina 
University of Thessaly 
Appears in Collections:Άρθρα/Articles

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