http://research.microsoft.com/apps/pubs/default.aspx?id=2093...
It's worth noting that most people doing Deep Learning aren't trying to replicate the brain, but just want to do a better job at Machine Learning (ML) and Artificial Intelligence. Here's how I see it as someone working on Deep Learning; someone correct me if I'm wrong.
Deep Learning: Trying to do ML - yes Trying to replicate brain - no (for the most part)
Numenta (HTM/CLA): Trying to do ML - yes (not sure how much they succeed) Trying to replicate brain - yes, but (i) we don't know exactly how the brain works (ii) they make approximations
Projects like Nengo (http://nengo.ca/): Trying to do ML - no Trying to replicate brain - yes
I'm not very familiar with Nengo.
Edit: formatting