Word-category violations in patients with Broca
s aphasia: An ERP study  

Oleh:

Wassenaar, Marlies ; Hagoort, Peter

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 92 no. 2 (2005), page 117-137.
Topik: Broca
s aphasia; Word-category violations; Event-related brain potentials; P600/SPS; (L)AN
Fulltext: 92_02_Wassenaar.pdf (919.85KB)

Isi artikel

An event-related brain potential experiment was carried out to investigate on-line syntactic processing in patients with Broca
s aphasia. Subjects were visually presented with sentences that were either syntactically correct or contained violations of wordcategory. Three groups of subjects were tested: Broca patients (N ¼ 11), non-aphasic patients with a right hemisphere (RH) lesion (N ¼ 9), and healthy aged-matched controls (N ¼ 15). Both control groups appeared sensitive to the violations of word-category as shown by clear P600/SPS effects. The Broca patients displayed only a very reduced and delayed P600/SPS effect. The results are discussed in the context of a lexicalist parsing model. It is concluded that Broca patients are hindered to detect on-line violations of word-category, if word class information is incomplete or delayed available.

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