Numbers are mentioned in the abstract.
The study missed an important issue, IMO: What happens to the alpha waves when the subjects are in a high-intensity activity that captures the ADD patients interest. Betcha there would be some interesting differences.
ADD can be both a gift and a curse. But when the chips are down and loads of information is coming in fast, I for one, am able to observe, process, decide, and act more quickly with better outcomes than my non-ADD friends and family. Once things are back to boringly normal...zzzzz...
bfl