Keywords: fMRI (task based), High-Field MRI, multi-contrast, ASL, VASO, T2 BOLD, CMRO2We proposed a 7T laminar concurrent ASL, VASO and BOLD fMRI sequence to obtain quantitative CBF, CBV, T2-BOLD and CMRO2 measurements with high resolution and specificity to detect layer-dependent vascular and metabolic activities. Ipsilateral visual stimuli (eccentricity of 4°–6°) induced ring-shaped BOLD and CBF signal increase on cortical surface corresponding to the pattern of visual stimulus while decreased BOLD/CBF signals can be seen in adjacent fovea regions. In negative BOLD response (NBR) regions, moderate decrease in T2-BOLD and CBV signals and strong CBF and CMRO2 decreases especially in deep cortical layers were observed, suggesting suppressed neuronal activities in NBR regions.
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