The Burkhalter lab finds that areas are embedded within a hierarchical network in which image fragments from the retina are sent through bottom-up pathways to extract percepts, and top-down pathways from higher to lower areas provide prior knowledge for interpreting the visual scene.
New study shows hierarchical and nonhierarchical network architectures between areas of mouse visual cortex
![Rostrocaudal series of coronal sections of the left hemisphere of mouse brain in which the anteromedial area was injected with antergrade tracer BDA.](https://neuroscience.wustl.edu/app/uploads/2022/01/burkhalter-nat-comms-header-300x200.jpg)