In the below video they have used an EEG reader to capture electrical signals from his brain. A software converted them into waveforms, certain frequencies of which were turned into electrical signals that got the roach leg kicking.
This makes sense when you consider that muscles—yours, mine, and those of the cockroach—are controlled by tiny bursts of current supplied by nerves, guided by electrical directions from our brains.
An amputated lone leg of a roach can be enervated by any electrical ping, if it’s at the right frequency, which is why the leg does a jig on a corkboard, separate from the anesthetized roach to which it belonged.
Thinker Thing is also building software that observes and “learns” which kinds of electrical signals are related to what kinds of motion in the leg, to be able to better control the induced movement.
Take a look at the TED video!
For better understanding check this out: http://www.backyardbrains.com/Home.aspx
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