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Abstract #0157

An in vivo study of BOLD laminar responses as a function of echo time and magnetic field

Irati Markuerkiaga1, Lauren J Bains1, Jose P Marques1, and David G Norris1,2

1Donders Centre for Cognitive Neuroimaging, Nijmegen, Netherlands, 2Erwin L. Hahn Institute for Magnetic Resonance Imaging, Essen, Germany

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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