Of all the HEG games, the red dot training is the easiest to work with and gives me the most usable and understandable feedback. But after spending many hours looking at that dot and willing it to get bigger, I got bored and frustrated and stopped doing it for a long while. It's hard work, gets me very tired and I didn't think it was getting me anywhere.
A few months ago, I read a book called "The Energy Cure" by William Bengston. He teaches a process called "image cycling" which involves coming up with a list of at least 20 things you want. Then picturing one by one having each thing and then going through your pictures at a very rapid pace. I've persisted in my image cycling practice and am getting better but I still have a long way to go. It is hard work and I found it exhausted me in exactly the same way HEG training did. And I do mean EXACTLY.
I was recently practicing image cycling at my computer and noticed my neglected HEG band hanging on the wall. Following a hunch, I put it on, connected it to the app and went to the red dot game. Then I started image cycling. The better I did the image cycling, the bigger the dot got. And I wasn't trying to will it to grow at all.
These are preliminary findings but I'm intrigued by the possibility of being able to combine these two different techniques. And if further sessions confirm the correlation between image cycling and better PFC oxygenation, I'd be very happy.