I suppose the science fiction image i- is literally implanting things through your skull into your brain.

Which, in certain cases, is what happens.

But there are a variety of devices.

I mean, to this point of miniaturization, when we were performing these studies 10, 15, 20 years ago, you would go into a room and you would look like the road crew for a touring band, with just boxes and boxes and racks of everything.

And you would need that in order to do now what we can do with a device, you know, the size of a 10p piece, and all of the computing that you need is actually embedded into it.

So, the fundamental signal that drives these devices is the individual firing of individual brain cells.

So, implanted devices that go through, into the brain, and sit next to these cells, physically, they record the activity of these individual units.

So you, so you get the signal from the brain, and then you reinject it into the body?