brain. Using functional brain imaging studies, he looked at brain activity while people were thinking about something neutral, something positive, and something awful. The neutral thoughts did not change brain activity. The positive thoughts actually cooled overall brain activity, especially in the limbic area of the brain (certainly not good for ADD folks who have poor brain activity). The negative thoughts brought overall brain activation, especially in the limbic areas (making them more depressed) and in the prefrontal cortex (helping them focus). Clinically, I have seen that many ADD
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