Survey shows one in five respondents have used Ritalin or Adderall -- 3:00 p.m.

Final exams traditionally have students studying long hours to cram for their final exams. But some students are now using a quick-fix for brain retention.

One in five respondents of adult professionals said they have used drugs to enhance brain power, according to a January survey in Nature journal. The online survey polled 1,400 people in 60 countries.

Ritalin and Adderall were the two drugs participants said they took.

Ritalin and Adderall are commonly used to treat attention-deficit hyperactivity disorder. They are also used to treat symptoms of narcolepsy and chronic fatigue syndrome. The stimulants are supposed to reduce impulsive behavior and facilitate concentration.

---- Contact Oscar Battle at obattle@lsureveille.com.