کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8687420 1580846 2018 32 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Laminar imaging of positive and negative BOLD in human visual cortex at 7 T
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
پیش نمایش صفحه اول مقاله
Laminar imaging of positive and negative BOLD in human visual cortex at 7 T
چکیده انگلیسی
Here we use half-millimeter human functional and structural magnetic resonance imaging (fMRI, MRI) to derive laminar profiles in early visual cortex using a paradigm known to elicit two separate responses originating from an excitatory and a suppressive source, avoiding any contamination due to blood-stealing. We report the shape of laminar blood level oxygenation level dependent (BOLD) profiles from the excitatory and suppressive conditions. We analyse positive and negative %BOLD laminar profiles with respect to the dominating linear trend towards the pial surface, a confounding feature of gradient echo BOLD fMRI, and examine the correspondence with the anatomical landmark of input-related signals in primary visual cortex, the stria of Gennari.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 164, 1 January 2018, Pages 100-111
نویسندگان
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