Anatomical Identification of V5 in Humans at 7 T

Robert Trampel¹, Robin Heidemann¹, Dimo Ivanov¹, Robert Turner¹

The goal of this study was the structural identification of the visual motion area V5, which is known to have regionally increased myelination. The earliest studies to show myeloarchitectural differences in grey matter demonstrated that the densely myelinated stria of Gennari (V1) is MR visible. The present study was performed at a field strength of 7 T. A high-resolution Turbo-Spin Echo sequence with an isotropic resolution of 0.5 mm was used to identify V5 anatomically. The location of V5 was confirmed by means of a functional MRI scan in which a moving star field paradigm activated this visual motion sensitive area.