BACKGROUND/AIMS Frank agrammatism, defined as the omission and/or substitution of grammatical morphemes with associated grammatical errors, is variably reported in patients with nonfluent variant primary progressive aphasia (nfPPA). This study addressed whether frank agrammatism is typical in agrammatic nfPPA patients when this feature is not required for diagnosis. METHOD We assessed grammat...

This paper is based on a recent research grant proposal submitted to ESRC en-titled`A cross-linguistic investigation into the impairment of functional categories in agrammatism in English and Scots Gaelic'. We outline a theoretically-motivated approach for characterising agrammatism, an acquired language deecit associated with Broca's aphasia. Based on previous experimental results presented in...

The studies of agrammatism show that not all morpho-syntactic elements are impaired to the same degree and that some of this variation may be due to language-specific differences. This study investigated the production of morpho-syntactic elements in 15 Jordanian-Arabic (JA) speaking individuals with agrammatism and 15 age-matched neurologically healthy individuals. Two experiments were conduct...

At the turn of the century, the study of agrammatism started in German aphasiology with the introduction of syntax as an object of research in linguistics and the psychology of language. The disorder descriptively known as agrammatism was originally thought to arise from multiple origins, at the level of syntactic word order, of function word insertion, of gramrnaticalization by means of morpho...

This chapter has three sections. The first provides an examination of the general notion that the brain distinguishes among amodal linguistic components. The second section attempts to support a more specific claim: Namely, that from a linguistic perspective, agrammatism can, best be reconstructed in syntactic terms. And the third section focuses upon processing disruptions in agrammatism-that ...

Comprehension failures in agrammatic aphasics, as well as their difficulties in sentence construction, have been attributed to an underlying deficit involving the retrieval of syntactic structure. In this study we show that four agrammatic patients display a remarkable sensitivity to structural information, as indicated by their performance on a grammaticality judgment task. These results indic...

In recent research on aphasia, a considerable number of studies have examined deficits in patients with agrammatism in the domain of verb-finiteness marking in different languages. Whilst much of this research has focused on tense and subject-verb agreement and has shown that tense is particularly impaired, the nature of verb-finiteness deficits in agrammatism is still a matter of controversy. ...

Background & Aims: This study explored the relation between the production of determiners and case-markers and the production of verbs and verb inflections in agrammatism. Determiners and case-markers require case and therefore depend on the existence of caseassigning constituents. Since verbs and verb inflections are case-assigners, and are impaired in agrammatism, we tested whether the presen...