کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3073008 1188820 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Finger representations in human primary somatosensory cortex as revealed by high-resolution functional MRI of tactile stimulation
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
پیش نمایش صفحه اول مقاله
Finger representations in human primary somatosensory cortex as revealed by high-resolution functional MRI of tactile stimulation
چکیده انگلیسی

Fine-scale functional organization of the finger areas in the human primary somatosensory cortex was investigated by high-resolution BOLD MRI at 3 T using a multi-echo FLASH sequence with a voxel size of 2 mm3. In six subjects independent tactile stimulation of the distal phalanx of the fingers of the right hand resulted in small circumscribed and barely overlapping activations precisely located along the posterior wall of the central sulcus. Three out of six subjects showed a complete succession of activation sites for all five fingers. The maps also allowed for the identification of individual variations in finger somatotopy. When registered onto the individual high-resolution MRI anatomy and compared with cytoarchitectonical maps, the finger representations were confirmed to lie within Brodmann area 3b as the main input region of the primary somatosensory cortex.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 42, Issue 1, 1 August 2008, Pages 28–35
نویسندگان
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