Science and Technology
publicado em 03/11/2012 às 10h03:00
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Brain-computer interface improves mobility for people with limited dexterity

Project enables communication based on brain waves and visual stimuli and restores communication and patient mobility

 
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Foto: Divulgação
Gabriel Pires with the interface
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Gabriel Pires with the interface

Scientists at the University of Coimbra in Portugal, have created a brain-computer interface for people with severe motor limitations, as patients with amyotrophic lateral sclerosis (ALS), and people with quadriplegic cerebral palsy.

By allowing a communication based only on brain waves and visual stimuli, the system developed by researcher Gabriel Pires restores communication, increases mobility and degree of independence of patients.

The system has been validated clinically and obtained positive results in a group of patients with ALS, a quadriplegic patient and a person with Duchenne's syndrome.

"This is a very powerful tool to assist you when entering the market, have a strong social impact because it will allow people with severe motor disabilities much more autonomy," says Pires.

According to the researcher, with the brain-computer interface, patients will be able to perform daily tasks like talking on Skype, drive a wheelchair, turn on lights, trigger alarms via phone, turn on the television, among others.

The interface consists of a set of algorithms for signal processing which, after collecting the brain signals by electroencephalography, decodes the brain patterns and selects letters sequential manner, allowing write sentences.

Are algorithms that adjust the neuronal patterns of individuals. For example, "the system can tell if the user at the time, whether or not to perform a given task. Moreover, with a simple shut-eye, the user shuts down the interface. To connect again, repeats the motion," explains Pires.

Source: Isaude.net
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