کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
925720 921525 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Speech and language functions that require a functioning Broca’s area
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی روانپزشکی بیولوژیکی
پیش نمایش صفحه اول مقاله
Speech and language functions that require a functioning Broca’s area
چکیده انگلیسی

A number of previous studies have indicated that Broca’s area has an important role in understanding and producing syntactically complex sentences and other language functions. If Broca’s area is critical for these functions, then either infarction of Broca’s area or temporary hypoperfusion within this region should cause impairment of these functions, at least while the neural tissue is dysfunctional. The opportunity to identify the language functions that depend on Broca’s area in a particular individual was provided by a patient with hyperacute stroke who showed selective hypoperfusion, with minimal infarct, in Broca’s area, and acutely impaired production of grammatical sentences, comprehension of semantically reversible (but not non-reversible) sentences, spelling, and motor planning of speech articulation. When blood flow was restored to Broca’s area, as demonstrated by repeat perfusion weighted imaging, he showed immediate recovery of these language functions. The identification of language functions that were impaired when Broca’s area was dysfunctional (due to low blood flow) and recovered when Broca’s area was functional again, provides evidence for the critical role of Broca’s area in these language functions, at least in this individual.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain and Language - Volume 105, Issue 1, April 2008, Pages 50–58
نویسندگان
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