How does ADD works in the brain?
Information that is processed in our brains is done by electrical signals. The brain cells be situated next to each other, and are arranged in such a way that they can transmit signals to each other. Because every brain cell autonomous functions they are therefore not connected. They are separated by a cell wall and a small amount of moisture. To let the electrical stimulus not to lose it's strength, there will be a transfer of this signal taken place by a small quantity chemical blocks. As a kind of cannon, these neurotransmitters are ejected toward the next brain cell. When these neurotransmitters in the brain clash with a following brain cell, it's creating a new electrical stimulus wich follows it's way again.
The brain areas that are stimulated are also responsible for stimulating the production of adrenalin. Adrenalin is a type of drug that makes your body and mind sharp and alert. In cases of extreme danger your body produces a lot of adrenalin that makes you able to huge physical effort wich otherwise would not have been held. In the case of ADD there is also a lack of sufficient brain stimulance and also produce less adrenalin than is necessary. The problem is not that someone with ADD can not focus, but they can not concentrate at the times it is necessary (Verbaten, 2001)