The Hindu : Front Page : Reading the mind

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Monday, Aug 18, 2008
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Reading the mind

LOS ANGELES: Here’s a mind-bending idea: The U.S. military is paying scientists to study ways to read people’s thoughts.

The hope is that the research could someday lead to a gadget capable of translating the thoughts of soldiers who suffered brain injuries in combat or even stroke patients in hospitals. But the research also raises concerns that such mind-reading technology could be used to interrogate the enemy.

$4 million grant

Armed with a $4 million grant from the Army, scientists are studying brain signals to try to decipher what a person is thinking and to whom the person wants to direct the message.

The project is a collaboration among researchers at the University of California, Irvine; Carnegie Mellon University; and the University of Maryland.

The scientists use brain wave-reading technology known as electroencephalography, or EEG, which measures the brain’s electrical activity through electrodes placed on the scalp.

It works like this: Volunteers wear an electrode cap and are asked to think of a word chosen by the researchers, who then analyse the brain activity.

In the future, scientists hope to develop thought-recognition software that would allow a computer to speak or type out a person’s thought.

“To have a person think in a free manner and then figure out what that is, we’re years away from that,” said lead researcher Michael D’Zmura, who heads the University of California, Irvine’s cognitive sciences department.

Extensive training

He said such a system would require extensive training by people trying to send a message and dismisses the notion that thoughts can be forced out.

“This will never be used in a way without somebody’s real, active cooperation.” — AP

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