Paralyzed woman uses mind to control robotic arm

The video tutorial explains the use of intercortical microelectrodes, which are small devices implanted into Jan Sherman's motor cortex. These electrodes are connected to a computer and a robotic arm. Researchers first have Sherman watch the robotic arm perform a task and then imagine herself doing the same task. The computer records her brain activity during this process. When Sherman thinks of a command, the computer translates her brain's electrical activity into instructions for the robotic arm, enabling it to perform the desired action.

What is the size of the intercortical microelectrodes used in Jan Sherman's motor cortex?

• 8 millimeters wide

• 2 millimeters wide

• 4 millimeters wide

• 6 millimeters wide

Where are the electrodes implanted in Jan Sherman?

• Sensory cortex

• Visual cortex

• Auditory cortex

• Motor cortex

What task is Jan Sherman asked to perform after watching the robotic arm?

• Imagine herself performing the task

• Describe the task verbally

• Write down the task steps

• Perform the task physically

How is Sherman's brain activity used to control the robotic arm?

• It is directly connected to the arm

• It is translated into commands by a computer

• It is manually input by researchers

• It is not used to control the arm

What does the computer do with the translated brain activity?

• Stores it for future use

• Prints it as a report

• Displays it on a screen

• Sends instructions to the robot