At the cellular level, although they share canonical types of inhibitory interneurons (INs) and excitatory principal neurons (PNs), it remains largely unknown to what extent a single
type in different brain regions displays similarity in gene expression, axonal shape, connectivity, and developmental origins.
Just like multiple properties (size, expected weight, texture, composition) of an object assessed by visual cues are
encoded in different brain regions, recent research done in the Goodale laboratory shows that the same is true of information obtained through the auditory cues provided by echolocation.
These results, Taniguchi explained, show that exquisite modifications of canonical neuronal
types in different brain regions may contribute to their functional diversification.