EVects of verbal working memory deWcits on metaphor comprehension in patients with Parkinson’s disease  

Oleh:

Monetta, Laura ; Pell, Marc D.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 101 no. 1 (2007), page 80-89.
Topik: Language processing; Parkinson’s disease; Pragmatics; Cognitive resources; Fronto-striatal dysfunction; Basal ganglia
Fulltext: 101_01_Monetta.pdf (354.63KB)

Isi artikel

This research studied one aspect of pragmatic language processing, the ability to understand metaphorical language, to determine whether patients with Parkinson disease (PD) are impaired for these abilities, and whether cognitive resource limitations/fronto-striatal dysfunction contributes to these deWcits. Seventeen PD participants and healthy controls (HC) completed a series of neuropsychological tests and performed a metaphor comprehension task following the methods of Gernsbacher and colleagues [Gernsbacher, M. A., Keysar, B., Robertson, R. R. W., & Werner, N. K. (2001). The role of suppression and enhancement in understanding metaphors. Journal of Memory and Language, 45, 433–450.] When participants in the PD group were identiWed as “impaired” or “unimpaired” relative to the control group on a measure of verbal working memory span, we found that only PD participants with impaired working memory were simultaneously impaired in the processing of metaphorical language. Based on our Wndings we argue that certain “complex” forms of language processing such as metaphor interpretation are highly dependent on intact fronto-striatal systems for working memory which are frequently, although not always, compromised during the early course of PD.

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