3 ms·
Yup. IN fact, our application was locked-in patients. SSVEP BCI "works", but only if you can foveate on the target, which means you can move your eyes, which
by hprotagonist 9y ago
Yup. IN fact, our application was locked-in patients. SSVEP BCI "works", but only if you can foveate on the target, which means you can move your eyes, which means you should use an eye tracker.
- yoz-y 9y agoThere are quite a lot of papers that show you can actually modulate SSVEP response even without eye movement. Their protocol was quite fascinating, they used a swarm of targets with four frequencies all intermingled. You had vertical and horizontal (short) lines which were either blue or red. One would control the system by concentrating on blue horizontal stripes for example. Of course the throughput was quite low even for a BCI. I think more research in this vein could reveal some interesting possibilities.
- hprotagonist 9y agoYou can. In our experience, we were unable to get reliable performance with SSVEP or m-sequences with targets in the periphery, though - the subject had to be foveating on the target to get a good response. Given that constraint, an eye tracker would be just as applicable to the patient population, so SSVEP was a bag of disadvantages with no obvious upside.