Comparative functional neuroanatomy: humans & octopodes
You could start with Hochner's papers, like this one:

Hochner, B., Shomrat, T., &amp; Fiorito, G. (2006). The octopus: a model for a comparative analysis of the evolution of learning and memory mechanisms. The Biological Bulletin, 210(3), 308-317. http://www.biolbull.org/content/210/3/308.full

As far as I know, he is a world expert.