05:44
Mr. Asim Rajput
Think of a number: Numbers oscillate on a screen at different frequencies—an EEG headband picks up on these signals to enable mobile phone input using thought control.
Credit: University of California, San DiegoResearchers in New york have created a way to place a call on a cell phone using your thoughts. Their new brain-computer interface is 100 percent correct for most people after only a brief training period.
The process was developed by Tzyy-Ping Jung, a researcher at the Swartz Middle for Computational Neuroscience at the University of New york, San Diego, & colleagues. Besides acting as an ultraportable aid for severely disabled people, the process might day have broader makes use of, he says. For example, it could generate the final hands-free experience for cell-phone users, or be used to detect when drivers or air-traffic controllers are getting drowsy by sensing lapses in concentration.
Participants were trained on the process by a novel visual feedback process. They were shown images on a computer screen that flashed on & off imperceptibly at different speeds. These oscillations can be detected in an element of the brain called the midline occipital. Jung & his colleagues exploited this by displaying a keypad on a giant screen with each number flashing at a slightly different frequency. For example, "1" flashed at nine hertz, & "2" at 9.25 hertz, & so on. Jung says this frequency can be detected through the EEG, thus making it feasible to tell which number the subject is taking a look at.
Like plenty of other such interfaces, Jung's process depends on electroencephalogram (EEG) electrodes on the scalp to analyze electrical activity in the brain. An EEG headband is connected to a Bluetooth module that wirelessly sends the signals to a Nokia N73 cell phone, which makes use of algorithms to process the signals.
The process was developed by Tzyy-Ping Jung, a researcher at the Swartz Middle for Computational Neuroscience at the University of New york, San Diego, & colleagues. Besides acting as an ultraportable aid for severely disabled people, the process might day have broader makes use of, he says. For example, it could generate the final hands-free experience for cell-phone users, or be used to detect when drivers or air-traffic controllers are getting drowsy by sensing lapses in concentration.
Participants were trained on the process by a novel visual feedback process. They were shown images on a computer screen that flashed on & off imperceptibly at different speeds. These oscillations can be detected in an element of the brain called the midline occipital. Jung & his colleagues exploited this by displaying a keypad on a giant screen with each number flashing at a slightly different frequency. For example, "1" flashed at nine hertz, & "2" at 9.25 hertz, & so on. Jung says this frequency can be detected through the EEG, thus making it feasible to tell which number the subject is taking a look at.
Like plenty of other such interfaces, Jung's process depends on electroencephalogram (EEG) electrodes on the scalp to analyze electrical activity in the brain. An EEG headband is connected to a Bluetooth module that wirelessly sends the signals to a Nokia N73 cell phone, which makes use of algorithms to process the signals.
0 comments:
Post a Comment