Smart Drugs?
I found this article entitled Building a Better Brain in The April issue of Discover Magazine and thought I would share this excerpt with my readers.
The Attention Edge
Pay attention to this paragraph and you are selectively concentrating on a task or idea while ignoring distractions like that dog barking down the street or your cell phone ringing. In a world of information overload and increasing multi-multitasking, you do not have to suffer from ADHD to have trouble focusing. You need no diagnosis to benefit from drugs that cut through the chaos and help you get things done.
Attention-focusing drugs, of course, have been here for years: Amphetamines, nicknamed “go pills,” were discovered in the late 19th century. By the 1940s these central nervous system stimulants were widely used to treat asthma and had become popular as “pep” and diet pills. They were embraced by members of the armed forces, especially pilots, who had to remain attentive to myriad tasks despite constant danger and fatigue. Rife with serious side effects, including hallucinations, anorexia, and heart problems, dextroamphetamine (trade name Dexedrine, better known as speed) is rarely used today by civilians. But the amphetamine mix Adderall and the amphetamine-related drug methylphenidate (Ritalin, Methylin, Concerta, among others) are commonly prescribed.
Exactly how these drugs work their magic remains unknown, but stimulants like Ritalin and modafinil influence the neurotransmitters dopamine and norepinephrine, which are essential for attention and memory skills. Both drugs inhibit reuptake, or reabsorption, of these neurotransmitters by neurons, thus prolonging their action. Modafinil also indirectly alters the action of glutamate, the main neurotransmitter used by neurons in the brain to send signals down the line. The center of action for all these drugs, says University of California at Davis psychiatrist Michael Minzenberg, is the prefrontal cortex, the part of the brain that is responsible for executive functions like sorting out conflicting thoughts, making choices, predicting events, and exerting social control.
Read the whole thing by clicking here.
