英语问题79

英语问题79
Scientists
have created a way to control a robot with signals from a human brain.
By generating the proper
brainwaves—picked up by a cap with electrodes that sense the signals and
reflect a person's instructions—scientists can instruct a humanoid robot to
move to specific locations and pick up certain objects [video].
The commands are limited to
moving forward,picking up one of two objects and bringing it to one of two
locations.The researchers have achieved 94 percent accuracy between the
thought commands and the robot's movements.
"This is really a
proof-of-concept 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 semi-autonomous 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 camera sees the
objects that are to be picked up it passes on the information to the user's
computer screen.Each object lights up randomly on the computer screen.When a
person wants something 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 algorithm(计算程序)i 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."The technique for picking up brain signals is
non-invasive,but 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 high-level commands such as
indicating 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."
In the future,the researchers
hope to make the robot more adaptive to the environment by having them carry
out more complex commands.
79.What is used to control the robot
in this demonstration
(no more than
2 words)
我的答案是A algorithm,我是通过“A similar algorithm(计算程序)i is used to decide where the robot will go.”这句话得出的,brainwaves,请分析为什么我的不对?