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Jul. 9th, 2004 12:46 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
theweaselkingBrain implants have been used to "read the minds" of monkeys to predict what they are about to do and even how enthusiastic they are about doing it.
It is the first time such high level cognitive brain signals have been decoded and could ultimately lead to more natural thought-activated prosthetic devices for people with paralysis, says Richard Andersen project leader at the California Institute of Technology, in Pasadena, US.
By decoding the signals from 96 electrodes in a region of the brain just above the ear – called the parietal cortex - the researchers were able to predict 67 per cent of the time where in their visual field trained monkeys were planning to reach.
They also found that this accuracy could be improved to about 88 per cent when the monkeys expected a reward for carrying out the task.
The team were even able to predict what sort of reward the monkeys were expecting - whether it was juice or just plain water - from their brain signals.
"In the future you could apply this cognitive approach to language areas of the brain," says Andersen. By doing so it may be possible to decode the words someone was thinking, he says.
It is the first time such high level cognitive brain signals have been decoded and could ultimately lead to more natural thought-activated prosthetic devices for people with paralysis, says Richard Andersen project leader at the California Institute of Technology, in Pasadena, US.
By decoding the signals from 96 electrodes in a region of the brain just above the ear – called the parietal cortex - the researchers were able to predict 67 per cent of the time where in their visual field trained monkeys were planning to reach.
They also found that this accuracy could be improved to about 88 per cent when the monkeys expected a reward for carrying out the task.
The team were even able to predict what sort of reward the monkeys were expecting - whether it was juice or just plain water - from their brain signals.
"In the future you could apply this cognitive approach to language areas of the brain," says Andersen. By doing so it may be possible to decode the words someone was thinking, he says.