how close are consumer eye tracking devices? It'd be interesting to see. My group works w/ the PD side of things, and doing a desktop-based eye test might be something we'd be interested in...
So I'd say all the pieces are in place to do this. The architectural design of the tobii and the leapmotion is almost identical. High frame rate cameras over USB3 illuminated with IR.
----
Throw in an http://emotiv.com/ EEG and one could do all sorts correlations.
What I don't like about Emotiv is that external EEG is never that great - it only gets aggregate LFP's from signals from > 6 square cm of cortex at a time, and high frequency signals don't get through the bone and muscle. Still, data is data....and the sad part is neuro people have been looking at EEG for over a century and never really bothered to do real signals analysis on them...
