Brain difference found among occasional drug users

March 25, 2014 11:14 PM

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Researchers find brain changes in 18- to 24-year-olds who use cocaine or amphetamines occasionally.

Using brain scans to test reaction times, the researchers showed 18- to 24-year-old college students either an X or an O on a screen and instructed them to press, as quickly as possible, a left button if an X appeared or a right button if an O appeared. If a tone was heard, they were instructed not ...

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