In this study we evaluate the echo time of laminar BOLD responses of the human primary visual cortex at 1.5 and 7T. It is often assumed that lower magnetic field strengths are increasingly biased towards the signal arising from larger veins located towards the pial surface. In this study (performed with an isotropic resolution of 0.75mm) we found similar shaped laminar profiles at 1.5 and 7T.
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