Morphologic agrammatism following a right hemisphere stroke in a dextral patient  

Oleh:

Rothi, Leslie J. Gonzalez ; Nadeau, Stephen E.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 43 no. 4 (Nov. 1992), page 642-667.
Fulltext: 43_04_Nadeau_Rothi.pdf (1.77MB)

Ketersediaan

Perpustakaan PKBB Nomor Panggil: 405/BAL/43 Non-tandon: tidak ada Tandon: 1

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Isi artikel

There is evidence of two major components of grammatic function in the brain: (1) morphologic, probably based in the postcentral perisylvian cortex, encompassing the selection of individual words and inflectional endings according to the rules of grammar; and (2) syntactic, probably based in the frontal lobes, encompassing construction of the overall structure of a sentence (syntax) to match the concept being considered. We present a stroke patient with impaired morphology but, unlike Broca's aphasics, relative sparing of syntax. He omitted 43% of articles, 40% of complementizers, 20% of pronouns, 27% of semantically marked prepositions, 43% of purely grammatic prepositions, and 22% of auxiliary verbs, but his average sentence length was 9.8 words and 64% of his sentences contained embedded clauses. He frequently intermingled two sentences to convey a given concept, juxtaposing words in grammatically unacceptable ways. This intermingling may represent either a grammatic "conduite d'approche," or a failure of the filtering function of a defective morphologic processor. His great difficulty in completing syntactic frames suggests that a more general form of the processes underlying grammatic morphology may play an important role in phrase structure generation. @ 1992 Academic Press, Inc.

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