کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4327331 | 1614123 | 2010 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Short-term language experience shapes the plasticity of the visual word form area
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کلمات کلیدی
ROIMVPAVWFAEPIFWHMBOLDFFAGLMFunctional MRI - افامآرآی یا تصویرسازی تشدید مغناطیسی کارکردیmultivariate pattern analysis - تجزیه و تحلیل الگوی چند متغیرهEcho-planar imaging - تصویربرداری اکو فلاریfMRI - تصویرسازی تشدید مغناطیسی کارکردیfunctional magnetic resonance imaging - تصویرسازی تشدید مغناطیسی کارکردیreaction time - زمان واکنشfull-width at half-maximum - عرض کامل در نیمه حداکثرlateral occipital cortex - قشر جانبی گوشه گوشه سمت چپGeneral linear model - مدل خطی کلیregion of interest - منطقه مورد نظرFusiform face area - منطقه چهره Fusiformvisual word form area - منطقه کلمه بصریblood oxygen level-dependent - وابسته به سطح اکسیژن خون
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Previous studies have identified a region in the left fusiform gyrus that responds selectively to visual words, termed the visual word form area (VWFA). Converging evidence from neuropsychological, electrophysiological, and functional neuroimaging studies suggests that the VWFA is wired up largely by long-term experience because it responds specifically to words and letter strings only in an orthography a subject knows. However, it is less clear whether the plasticity of the VWFA can be modulated by short-term language experience. Here, we used functional magnetic resonance imaging (fMRI) to address this question by examining whether the representation for novel stimuli could be constructed in the VWFA after a short-term language experience. In particular, we trained subjects to associate a set of novel stimuli with English letters. We found that VWFA response to the trained stimuli was significantly higher than that of untrained stimuli after 3Â days of association training. This learning-induced change in neural activities was absent in other specialized cortical areas involved in face perception or in processing object shapes. Multivariate pattern analysis further revealed that the learning-induced representation engaged the same neural population underlying the representation for language forms constructed through long-term experience. Our study clearly illuminates that the plasticity of the VWFA can be shaped by short-term language experience, bridging the gap between short-term and long-term experiences in language learning.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research - Volume 1316, 26 February 2010, Pages 83-91
Journal: Brain Research - Volume 1316, 26 February 2010, Pages 83-91
نویسندگان
Yiying Song, Yong Bu, Siyuan Hu, Yuejia Luo, Jia Liu,