I have been following Biosignal for about 6 months. I found out about them through uni - one of the directors is the head of a faculty there.
Anyhow, looks like they have a few interesting applications - whether it is pie in the sky sort of stuff I don't know. It's hard to gauge that even when you are very familar with the technology they are using.
I thought it could be an interesting, albeit high risk stock to own. Can anyone remember any of similar sized biotech stocks that experienced dramatic growth due to the take up of their product/technology?