This study examined patterns of neural activation associated with treatment-induced improvement of complex sentence production (and comprehension) in six individuals with stroke-induced agrammatic aphasia, taking into account possible alterations in blood flow often associated with stroke, including delayed time-to-peak of the hemodynamic response function (HRF) and hypoperfused tissue. Aphasic...

Individuals with agrammatism have specific problems with the production of movement-derived non-canonical sentence structures which, according to the Tree Pruning Hypothesis (TPH, Friedmann & Grodzinsky, 1997; Friedmann, 2001), are due to an inability to access hierarchically higher nodes of the syntactic tree. Thus, movement-derived structures relying on higher nodes in the syntactic tree cann...

This study presents results from a sentence completion test that examines the production of finite main clauses and non-finite relative clauses in Turkish agrammatic speech. In main clauses, the verb is finite and all its constituents are in their base positions. In relative clauses, the verb is a participle and the NP undergoes overt movement to an A-bar position. The results show that non-fin...

Sentence processing problems form a common consequence of left-hemisphere brain injury, in some patients to such an extent that their pattern of language performance is characterized as "agrammatic". However, the location of left-hemisphere damage that causes such problems remains controversial. It has been suggested that the critical site for syntactic processing is Broca's area of the frontal...

The limitations inherent in group versus case studies appear to lie in a complementary distribution, underscoring the importance of combining both strategies within a single research program. However, this compromise approach requires analytic tools that permit us to combine and evaluate individual and group data in a common format. Maximum likelihood estimation (MLE) belongs to a family of pro...

Previous research has found that agrammatic Broca aphasic patients have particular difficulty using determiners like "a" and "the" for the purposes of sentence comprehension. In this study, we test whether or not such difficulty extends to the level where lexical subcategories are distinguished by these articles. The absence or presence of a determiner distinguishes proper from common nouns (e....

      The deaf community living in Georgia unites about 2500 people. Deaf people on the territory of are a linguistic minority. communication language this members is Georgian Sign Language - GESL. One big problems that very worried large part do not know well or poorly state spoken language. Due to lack adequate knowledge language, avoid written communications even soc...

Bradley, Garrett, and Zurif (Bradley, Computational distinctions of vocabulary type. Unpublished doctoral dissertation, MIT Press; Cambridge, MA, 1978; Biological studies of mental processes, MIT Press, Cambridge, MA, 1980) have suggested that closed-class word access is normally mediated by a different route than the open-class one, and that the loss of this closed-class route might account fo...

Objective To determine relative frequencies and linguistic profiles of primary progressive aphasia (PPA) variants associated with GRN (progranulin) mutations to study their neuroanatomic correlates. Methods Patients PPA carrying (PPA- ) were selected among a national prospective research cohort 1,696 patients frontotemporal dementia, including 235 PPA. All amyloid-positive CSF biomarkers exclud...