کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10456417 921476 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamics of phonological-phonetic encoding in word production: Evidence from diverging ERPs between stroke patients and controls
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی روانپزشکی بیولوژیکی
پیش نمایش صفحه اول مقاله
Dynamics of phonological-phonetic encoding in word production: Evidence from diverging ERPs between stroke patients and controls
چکیده انگلیسی
While the dynamics of lexical-semantic and lexical-phonological encoding in word production have been investigated in several event-related potential (ERP) studies, the estimated time course of phonological-phonetic encoding is the result of rather indirect evidence. We investigated the dynamics of phonological-phonetic encoding combining ERP analyses covering the entire encoding process in picture naming and word reading tasks by comparing ERP modulations in eight brain-damaged speakers presenting impaired phonological-phonetic encoding relative to 16 healthy controls. ERPs diverged between groups in terms of local waveform amplitude and global topography at ∼400 ms after stimulus onset in the picture naming task and at ∼320-350 ms in word reading and sustained until 100 ms before articulation onset. These divergences appeared in later time windows than those found in patients with underlying lexical-semantic and lexical-phonological impairment in previous studies, providing evidence that phonological-phonetic encoding is engaged around 400 ms in picture naming and around 330 ms in word reading.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain and Language - Volume 126, Issue 2, August 2013, Pages 123-132
نویسندگان
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