Greg Gage : How to control someone else's arm with your brain

                      
TED 2015
Greg Gage : How to control someone else's arm with your brain (transcript)
Summary
The speaker is a neuroscientist. He wants young students to study neuroscience, first, because the brain is an amazing organ. Secondly, schools don't have a class to teach it, and lastly, there is no medical treatment of neurological disorders in spite of many patients. One of the reasons is that the equipment is so complex and so expensive, thus he makes it simple enough and affordable enough for young students and amateurs to study the brain.
In this TED talk, he showed us one experiment with DIY neuroscience equipment.
It can record your brain movement through putting electrodes on your arm. Your brain sends electrical and chemical messages, and when it goes to your muscles your arm moves. The equipment can pick up its electrical messages through putting electrodes on the arm of one volunteer and can tell it to another volunteer who put electrodes on his/her arm.
It means you can control someone else's arm with your brain through putting electrodes on your arm.

Words in this story
record /verb/rɪkˈɔɚd/      record /noun/rékɚd/
discharge /  leak, leakage, emission, release, flow
plug / insert, put in