“This is really a proofofconcept demonstration,”said Rajesh Rao,a researcher from the University of Washington who leads the project.“It suggests that one day we might be able to use semiautonomous robots for such jobs as helping disabled people or performing routine tasks in a person's home.”
The person wearing the electrode cap watches the robot's movement on a computer screen through two cameras installed on and above the robot.
When the robot's cameras see the objects that are to be picked up they pass on the information to the user's computer screen.Each object lights up randomly on the computer screen.When a person wants something to be picked up and it happens to light up,the brain registers surprise and sends this brain activity to the computer and then to the robot as the choice object.The robot then proceeds to pick up the object.
A similar program is used to decide where the robot will go.
“One of the important things about this demonstration is that we're using a ‘noisy’ brain signal to control the robot,”Rao said.“That means we can only obtain brain signals indirectly from sensors on the surface of the head,and not where they are generated deep in the brain.As a result,the user can only generate highlevel commands such as indication which object to pick up or which location to go to,and the robot needs to be autonomous enough to be able to execute such commands.”
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