Electrodes [noun]

In January 2019, researchers at Johns Hopkins University implanted electrodes in the brain of Robert “Buz” Chmielewski.

Thin tendrils laced with hundreds or thousands of electrodes will spread out in the brain to listen in on — and perhaps even stimulate — nerve cells.

Using an electrode and a computer, the team could then monitor for these currents.

Their technology replaces the graphite electrode in lithium-ion batteries with one made of semiconductor nanoparticles.

What’s more, the new electrolyte doesn’t degrade the battery’s electrodes, which helps the battery last longer.

Zinc is great because it's very cheap, can be used to make one of the two electrodes, and, in the right context, allows the use of air at the other electrode.

She attached electrodes to four different leg muscles in her subjects to compare muscle activation under the various testing conditions.

It’s unlikely you’d be able to use this to beam movies directly into your head, as this would require millions not thousands of electrodes and there’s still no way to influence the color of phosphenes.

Plus, the electronics sit inside a tube within the device, avoiding the need for surface electrodes that can get messed up by sweat.

The electrodes noted which parts of the brain turned on during each task.