کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9429609 1297052 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Voltage-sensitive dye imaging of intervibrissal fur-evoked activity in the rat somatosensory cortex
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Voltage-sensitive dye imaging of intervibrissal fur-evoked activity in the rat somatosensory cortex
چکیده انگلیسی
The intervibrissal fur-evoked activity in the rat somatosensory cortex was investigated using high-resolution optical imaging with a voltage-sensitive dye. The optical imaging revealed that the intervibrissal fur representation forms a U-shaped band around the borders of the posteromedial barrel subfield (PMBSF), and that this representation is characterized by a rostral-to-caudal somatotopic organization. When GABAA-mediated inhibition was partially suppressed by treatment with bicuculline, stimulation of the intervibrissal fur elicited spreading of an excitation wave in an area outside the PMBSF. The spreading wave propagated in both directions along the aforementioned U-shaped band of cortex, but barely invaded the center of the PMBSF. These imaging results suggest a distinct subdivision of cortex adjacent to, but outside, the PMBSF in the rat somatosensory cortex; this region receives input from intervibrissal fur, and seems to process its sensory information through well-developed local horizontal connections.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 381, Issue 3, 24 June 2005, Pages 258-263
نویسندگان
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