I am interested in research in this area, but there is one thing that I am most interested at this current point in time: the image format that the eye sends to the brain.
Now, I am not interested in what goes on in the brain once the electrical impulses reach the brain that come from the eye...I just interested in analyzing the actual electrical impulses that move through the optic nerve from the eye to the brain, and then interpreting them. They are not anything like digital signals...but they are still electrical signals with a waveform...spikes...troughs...crests...etc.
I would like to analyze these waveforms, interpret them, and try to figure out how the eye sends image data to the brain. If we can figure this out, then we could replicate it...a technology that would be useful to many different things - such as helping those who are now blind to see through a computer-operate eye that sends those same electrical impulses to the brain. (It would not cure blindness in everybody because some people are blind as a result of a problem in the brain, and not in the eye, but it would help out some people).