I'm not sure if you're interested in my participation in this study. Here's why:

I quit online poker many years ago after a bit over 1 year of playing/studying poker games full time.
I had to quit because I was having panic attacks while playing, and nothing I was doing could eliminate them.

On the one hand, this seems like exactly the type of thing you're interested in, but on the other, I haven't been a poker player in many years.

I will participate if it fits your study.
Let me know.