Impairment of syntax and lexical semantics in a patient with bilateral paramedian thalamic infarction  

Oleh:

Witte, Lieve De ; Wilssens, Ineke ; Engelborghs, Sebastiaan ; Deyn, Peter P. De ; Mariën, Peter

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 96 no. 1 (2006), page 69-77.
Topik: Bithalamic stroke; SimpliWcation of syntax; Transcortical sensory aphasia
Fulltext: 96_01_Witte.pdf (1.36MB)

Isi artikel

Bilateral vascular thalamic lesions are rare. Although a variety of neurobehavioral manifestations have been described, the literature is less documented with regard to accompanying linguistic disturbances. This article presents an in-depth neurolinguistic analysis of the language symptoms of a patient who incurred bilateral paramedian ischemic damage of the thalamus. In the post-acute phase of the stroke, a unique combination of transcortical sensory aphasia with syntactic impairment was found. Because of this atypical semiological association, additional analyses of spontaneous speech were performed. In spite of the typological aYnity with the grammatic characteristic of marked simpliWcation of syntax observed in Broca’s aphasia, only a wordclass speciWc, lexical-semantic deWcit for verbs was objectiWed. The hypothesis that lexical-semantic disturbances in our patient might result from a functional deaVerentiation of both thalami with the frontal lobe is supported by: (1) associated neuropsychological deWcits of frontal origin and (2) frontal-like behavioral disturbances.

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