I just found this Russian group which also approaches AI by making assumptions on the underlying processing in the brain with emphasis on minicolumns functions and role.
Some of their points might be weird but others are really interesting.
Unfortunately most of their material is in Russian.
Their key concepts English page is quite detailed though, here-s just one excerpt:
Hippocampus is not temporary storage of memories, but a dispatcher that assigns identifiers
In order to form a memory, two patterns are needed. One pattern carries the information to store; the other one carries the identifier (descriptor) of this information. We assume that the hippocampus itself does not store any memories. Instead, its responsibility is to generate the unique identifiers of memories. These identifiers propagate to the corresponding areas of the cortex where the identifiers and memorized information interfere. Interference of identifier and information results in forming memory, not in hippocampus, but directly where needed, right in the cortex.