I think it would make an interesting group effort to try and estimate the speed of neuro research to get some idea of how fast we can expect neuro-inspired AI.

I'm going to try and figure out the number of researcher working on figuring out the algorithms for long term changes to neural organisation (LTP, neuro plasticity and neuro genesis). I get the feeling it is a lot less than those working on figuring out short term functionality, but I'm not an expert and not submerged in the field.