کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10144117 | 1646296 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The Distinct Roles of Dorsal and Ventral Visual Systems in Naming of Chinese Characters
ترجمه فارسی عنوان
نقش های برجسته سیستم های بصری پشتی و شکمی در نامگذاری شخصیت های چینی
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کلمات کلیدی
MFGIOCVWFAGCAECs - EC هاiPS - IPSEffective connectivity - اتصال موثرGranger causality analysis - تجزیه و تحلیل علیت گرنجرfMRI - تصویرسازی تشدید مغناطیسی کارکردیfunctional magnetic resonance imaging - تصویرسازی تشدید مغناطیسی کارکردیRapid automatized naming - سریع نامگذاری خودکارintraparietal sulcus - سوزن داخل شکمRån - شتمmedial frontal cortex - قشر جلویی داخلیvisual word form area - منطقه کلمه بصریChinese - چینی هاmiddle frontal gyrus - گوریور پیشانی متوسط
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
چکیده انگلیسی
We aimed to investigate the role of dorsal and ventral visual systems in rapid naming of simple Chinese characters. Twenty college students (10 female; Mageâ¯=â¯22.5â¯years) were required to covertly read a character- and a cross-matrix during an fMRI experiment. A basic prosaccade and a prosaccade-naming task were also performed to confirm the functional significance of the findings. The results of whole brain analysis showed that both dorsal and ventral visual systems were activated in the character-matrix reading. The cross-matrix scanning elicited weaker activation in the left middle frontal gyrus, superior temporal gyrus, and ventral occipitotemporal cortex. Next, whereas both top-down and bottom-up effective connectivities (ECs) were found between these two systems in the character-matrix reading, only top-down ECs were observed in the cross-matrix scanning. Moreover, in the character-matrix reading, we found a negative correlation between the reaction time of naming in the prosaccade-naming task and the EC strength from visual word form area to superior temporal gyrus and a positive correlation between the reaction time in the basic prosaccade task and the EC strength from middle frontal gyrus to intraparietal sulcus. The cross-matrix scanning did not show any brain-behavior relationship. These results suggest that while the dorsal visual system is mainly engaged in eye-movement control, the ventral system is associated more with orthographic processing and orthography-phonology mapping.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 390, 15 October 2018, Pages 256-264
Journal: Neuroscience - Volume 390, 15 October 2018, Pages 256-264
نویسندگان
Wei Zhou, Zhichao Xia, George K. Georgiou, Hua Shu,