کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6281200 1615114 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direction of magnetoencephalography sources associated with feedback and feedforward contributions in a visual object recognition task
ترجمه فارسی عنوان
جهت منابع مغناطیسشناختی مرتبط با بازخورد و مشارکتهای پیشگیرانه در یک وظیفه شناسایی شیء بصری
کلمات کلیدی
مغناطیس فوگلوگرافی، غشاء مغزی، دو قطبی فعلی، بالا به پایین، پایین پایین
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
چکیده انگلیسی
Identifying inter-area communication in terms of the hierarchical organization of functional brain areas is of considerable interest in human neuroimaging. Previous studies have suggested that the direction of magneto- and electroencephalography (MEG, EEG) source currents depend on the layer-specific input patterns into a cortical area. We examined the direction in MEG source currents in a visual object recognition experiment in which there were specific expectations of activation in the fusiform region being driven by either feedforward or feedback inputs. The source for the early non-specific visual evoked response, presumably corresponding to feedforward driven activity, pointed outward, i.e., away from the white matter. In contrast, the source for the later, object-recognition related signals, expected to be driven by feedback inputs, pointed inward, toward the white matter. Associating specific features of the MEG/EEG source waveforms to feedforward and feedback inputs could provide unique information about the activation patterns within hierarchically organized cortical areas.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 585, 12 January 2015, Pages 149-154
نویسندگان
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