We further mapped out where PPC in the mouse overlaps with the much-studied extrastriate cortical areas. Papers often use different nomenclatures for the same region, either calling it PPC or naming one of the extrastriate areas. Here, we put both nomenclatures into a common register by combining old-fashioned Nissl staining (above) with triple-tracer injections in visual cortex (below):
We are continuing this line of work by now defining where visual outputs (the extrastriate areas) overlap with frontally-projecting motor inputs; the simplicity of the mouse allows us to visualize the visual-to-motor projection pathway in a single preparation. Stay tuned!