Human MRI scanners at ultra-high magnetic field strengths of 7 T and higher are
increasingly available to the neuroscience community. A key advantage brought by ultra …

The cortex is a massively recurrent network, characterized by feedforward and feedback
connections between brain areas as well as lateral connections within an area …

In addition to bottom-up input, the visual cortex receives large amounts of feedback from
other cortical areas [1–3]. One compelling example of feedback activation of early visual …

Diffusion MRI remains the most comprehensive reference for understanding this rapidly
evolving and powerful technology and is an essential handbook for designing, analyzing …

With sufficient image encoding, high-resolution fMRI studies are limited by the biological
point-spread of the hemodynamic signal. The extent of this spread is determined by the local …

Gradient and spin echo (GRE and SE, respectively) weighted magnetic resonance images
report on neuronal activity via changes in deoxygenated hemoglobin content and cerebral …

Functional MRI using blood oxygenation level-dependent (BOLD) contrast indirectly probes
neuronal activity via evoked cerebral blood volume (CBV) and oxygenation changes. Thus …

The six cortical layers have distinct anatomical and physiological properties, like different
energy use and different feedforward and feedback connectivity. It is not known if and how …

Columnar arrangements of neurons with similar preference have been suggested as the
fundamental processing units of the cerebral cortex. Within these columnar arrangements …

Studies on human brain microcirculation have thus far yielded few quantitative data,
preventing the closest possible interpretation of functional imaging methods such as fMRI …